Ok here we go… I wont provide support on this code so you will have to mess with it till you get it to work.

To add a geolocation field to Products/Store settings:

Get yourself a copy of Advanced Custom Fields and create a field group with the geolocation field in it. Set a location rule of:

Current User Role = Vendor AND Current User = Viewing Front End

If you want to geocode the product too then add an additional location rule of:

Post Type = Product

*****************************
* Initialize ACF Google Map *
*****************************

Add the following to your functions.php:

/**
 * ACF Google Map API Key
 *
 * Needed to initialize ACF Map field
 */
function my_acf_init() {
  
  $mapapikey = 'your_google_map_api_key_here';
    
    acf_update_setting('google_api_key', $mapapikey);
}

add_action('acf/init', 'my_acf_init');

Now if all you are wanting to do is to be able to filter based on geolocation and you do not want to display a map on the product itself, you are done. Go get you a copy of Facetwp and use their proximity facet with their google map addon and you are set. If you do want to display a map say in the product itself in its own tab continue on below:

*****************************
* Enqueue ACF Google Map JS *
*****************************

Add the following to your functions.php:

/**
 * Enqueue ACF Map JS
 */
function my_theme_add_scripts() {
  if ( is_woocommerce() ) {
// 
 $mapapikey = 'your_google_map_api_key_here';
 $mapurl = "https://maps.googleapis.com/maps/api/js?key=$mapapikey";
 wp_enqueue_script( 'google-map', $mapurl, array(), '3', true );
 wp_enqueue_script( 'google-map-init', get_stylesheet_directory_uri() . '/library/js/yourmap.js', array('google-map', 'jquery'), '1.5', true );
	}
  } 
add_action( 'wp_enqueue_scripts', 'my_theme_add_scripts' );

Create the following directory structure in your child theme root folder:

/library/js/

Create a javascript file called yourmap.js and store it in the above directory with the following contents:

(function($) {
 
/*
*  render_map
*
*  This function will render a Google Map onto the selected jQuery element
*
*  @type function
*  @date 8/11/2013
*  @since 4.3.0
*
*  @param $el (jQuery element)
*  @return n/a
*/
 
function render_map( $el ) {
 
 // var
 var $markers = $el.find('.marker');
 
 // vars
 var args = {
 scrollwheel:  false,
 zoom : 10,
 center : new google.maps.LatLng(0, 0),
 mapTypeId : google.maps.MapTypeId.ROADMAP
 };
 
 // create map          
 var map = new google.maps.Map( $el[0], args);
 
 // add a markers reference
 map.markers = [];
 
 // add markers
 $markers.each(function(){
 
     add_marker( $(this), map );
 
 });

 // center map
 center_map( map );
 
}

 
/*
*  add_marker
*
*  This function will add a marker to the selected Google Map
*
*  @type function
*  @date 8/11/2013
*  @since 4.3.0
*
*  @param $marker (jQuery element)
*  @param map (Google Map object)
*  @return n/a
*/
 
function add_marker( $marker, map ) {
 
 // var
 var latlng = new google.maps.LatLng( $marker.attr('data-lat'), $marker.attr('data-lng') );

 // create marker
 var marker = new google.maps.Marker({
 position : latlng,
 map : map
 });
 
 // add to array
 map.markers.push( marker );
 
 // if marker contains HTML, add it to an infoWindow
 if( $marker.html() )
 {
 // create info window

 var infowindow = new google.maps.InfoWindow({
 content : $marker.html()
 });
 
 // show info window when marker is clicked
 google.maps.event.addListener(marker, 'click', function() {
 
 infowindow.open( map, marker );
 
 });
 }
 
   // Event that closes the Info Window with a click on the map
  google.maps.event.addListener(map, 'click', function() {
    infowindow.close();
  });

}
 
/*
*  center_map
*
*  This function will center the map, showing all markers attached to this map
*
*  @type function
*  @date 8/11/2013
*  @since 4.3.0
*
*  @param map (Google Map object)
*  @return n/a
*/
 
function center_map( map ) {
 
 // vars
 var bounds = new google.maps.LatLngBounds();
 
 // loop through all markers and create bounds
 $.each( map.markers, function( i, marker ){
 
 var latlng = new google.maps.LatLng( marker.position.lat(), marker.position.lng() );
 
 bounds.extend( latlng );
 
 });
 
 // only 1 marker?
 if( map.markers.length == 1 )
 {
 // set center of map
     map.setCenter( bounds.getCenter() );
     map.setZoom( 10 );
 }
 else
 {
 // fit to bounds
 map.fitBounds( bounds );
 }

     $(document).on('click', '.delivery_area_tab a', function() {
        google.maps.event.trigger(map, 'resize');
        map.setCenter( bounds.getCenter() );
        map.setZoom( 10 );
    });

 
}
 
/*
*  document ready
*
*  This function will render each map when the document is ready (page has loaded)
*
*  @type function
*  @date 8/11/2013
*  @since 5.0.0
*
*  @param n/a
*  @return n/a
*/
 
$(document).ready(function(){
 
 $('.acf-map').each(function(){
 
 render_map( $(this) );
 
 });
 
});
 
})(jQuery);

Add the following to your function.php file to render the map in a new tab on the single product page:

add_filter( 'woocommerce_product_tabs', 'woo_new_product_tab' );
function woo_new_product_tab( $tabs ) {
	
	// Adds the new tab
	
	$tabs['delivery_area'] = array(
		'title' 	=> __( 'Delivery Area', 'woocommerce' ),
		'priority' 	=> 50,
		'callback' 	=> 'woo_new_product_tab_content'
	);

	return $tabs;

}
function woo_new_product_tab_content() {

	// The new tab content

$location = get_field('delivery_location');
  
  echo '< div>';
  echo '< h3>';
  echo 'Delivery Area</h3>';
  echo '< hr>';
  echo '< div class="acf-map">';
  echo '< div class="marker" data-lat="' . $location['lat'] . '" data-lng="' . $location['lng'] . '">';
  echo '< div id="iw-container">';
  echo '< div class="iw-title">';
  echo 'Title';
  echo '</div>';
  echo '< div>';
  echo '< h3';
  echo '< span>Something here</span>';
  echo '</h3>';
  echo '< div>';
  echo '<a class="button" href="#">Button</a>';
  echo '</div>';
  echo '</div>';
  echo '</div>';
  echo '</div>';
  echo '</div>';
  echo '</div>';
	
} 

If you want to display the geolocate field on the WC Pro frontend store setting form to do the following (this allows you to filter on vendor location if you want):

*****************************
* Front End Store Settings: *
*****************************

Grab the field group ID from the URL when you are in it from the admin panel of ACF:

wp-admin/post.php?post=161&action=edit

Add this to your functions.php substituting 'fields_group' => 161, the value of 161 with whatever your field group ID is:

/* - Courtesy of Ben Lumley - https://www.wcvendors.com/help/topic/howto-add-acf-fields-to-frontend-shop-edit/
 * 
 * This will display + save any custom fields applicable to the vendor_shop in question. Second one displays the fields, you can adjust the action it’s attached to in order  * to move the fields (see templates/dashboard/store-settings.php in the pro plugin for possible actions). You could also split and display different fields in different  * places – see the docs for acf_form, you can select single/groups of fields.
 * http://www.advancedcustomfields.com/resources/acf_form/
 * Also possible via acf_form to alter the markup a bit to make it fit your theme.
 *
 * This code is not supported by WC Vendors, use at your own risk and at your own discretion.
*/

add_action('wcvendors_settings_after_shop_name', 'wcv_save_acf_fields');
function wcv_save_acf_fields() {
	acf_form_head();
}

add_action('wcvendors_settings_after_seller_info', 'wcv_add_acf_fields');
function wcv_add_acf_fields() {
	acf_form( array(
	  	'fields_group' => 161,  //  Change this to whatever yours is
		'form' => false,
		'return' => false,
		'post_id' => WCVendors_Pro_Vendor_Controller::get_vendor_store_id( get_current_user_id() )
	) );
}

// if you have media upload fields (file/image), they won't work, and further, the existing branding uploaders for icon etc break.
// this is because acf alters the uploader init to pass a post_id, and vendor users don't have 'edit_post' capabilities, assume you guys are handling this somewhere else
// this snippet adds a filter in so that if we are trying to 'edit_post' on our own published vendor store, it will be allowed - restoring media upload.

add_filter('user_has_cap', 'wcv_vendor_has_cap', 4, 99);
function wcv_vendor_has_cap($allcaps, $caps, $args, $user) {
	if ($args[0] == 'edit_post') {
	$post = get_post($args[2]);
	if ($post->post_type == 'vendor_store' && $post->post_author == $user->ID) {
		$allcaps['edit_published_posts'] = true;
		}
	}
	return $allcaps;
}

//Filter all ACF values.

function my_kses_post( $value ) {
	
	// is array
	if( is_array($value) ) {
	
		return array_map('my_kses_post', $value);
	
	}
	
	
	// return
	return wp_kses_post( $value );

}

add_filter('acf/update_value', 'my_kses_post', 10, 1);