yoast_seo_settings_change_bulk_pagination.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/* Change the pagination limit for the Yoast SEO bulk editor
 * Credit:  https://github.com/emmelemme
 * Last Tested:  Aug 08 2023 using Yoast SEO 20.12 on WordPress 6.2.2
 * Default = 10 items per page
 */

add_filter('wpseo_posts_per_page', function($number){
  return 20;  
});