gistfile1.txt

Enqueue scripts
functions.php

function smpx_scripts(){

  wp_enqueue_script( 'bolsacom', get_template_directory_uri().'/assets/js/bolsacom.js', array('jquery'), rand(), true );

	// PRODUCT VALORATIONS
	wp_localize_script('bolsacom', '$ajax_vars', array(
		'url' => admin_url( 'admin-ajax.php' ),
		'action' => 'store-product-ranking',
		'nonce' => wp_create_nonce( 'my-ajax-nonce' )
	) );

}

add_action( 'wp_enqueue_scripts', 'smpx_scripts' );



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Function returned on ajax success
functions.php

function bolsa_store_product_ranking(){

	
	echo 'What ever you need to return here';
	

}
add_action( 'wp_ajax_nopriv_store-product-ranking', 'bolsa_store_product_ranking' );
add_action( 'wp_ajax_store-product-ranking', 'bolsa_store_product_ranking' );





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Ajax
YOUR_OWN_JAVASCRIPT_FILE.js

function productValoration ($groupID, $val) => {

		jQuery.ajax({
			type: "post",
			url: $ajax_vars.url,
			data: {
				action: $ajax_vars.action, 
				nonce: $ajax_vars.nonce,
				groupID: $groupID,
				ranking: $val
			},
			success: function($result){
				console.log($result);
			}
		});

	},