add_action('woocommerce_thankyou', 'conversion_tracking_thank_you_page', 95, 1);
function conversion_tracking_thank_you_page($order_id)
{
      if (!$order_id)
            return;

      $order = wc_get_order($order_id);
?>
      <script>
            gtag('event', 'conversion', {
                  'send_to': 'AW-10852304507/GCDUCITa7aMDEPuM5LYo',
                  'value': 1.0,
                  'currency': 'PLN',
                  'transaction_id': ''
            });
      </script>
<?php
}