How to track conversion in Google Ads for every link click in a page?

Solution:

Your google snippet should be placed between your <head></head> tag. In your child theme or active theme edit your header.php file where you should find the <head> tag. I pref to add any snippet before wp_head() function. Here is an example of header.php

<!doctype html>
<html <?php language_attributes(); ?>>
<head>
    <meta charset="<?php bloginfo( 'charset' ); ?>" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <!-- Event snippet for Solicitar cotação conversion page
    In your html page, add the snippet and call gtag_report_conversion when someone clicks on the chosen link or button. -->
    <script>
    function gtag_report_conversion(url) {
    var callback = function () {
        if (typeof(url) != 'undefined') {
        window.location = url;
        }
    };
    gtag('event', 'conversion', {
        'send_to': 'AW-ID/AWID',
        'event_callback': callback
    });
    return false;
    }
    </script>    
    <?php wp_head(); ?>
</head>
<body <?php body_class(); ?>>