edit Yoast SEO meta title, description, og:title, og:Description,

function.php

<?php 
// og:title
add_filter('wpseo_opengraph_title', 'wpseo_opengraph_title_callback');
function wpseo_opengraph_title_callback( $title ){
  // do something here.
	return $title;
}
// og:description
add_filter('wpseo_opengraph_desc', 'wpseo_opengraph_desc_callback');
function wpseo_opengraph_desc_callback( $ogdesc ){
  // do edit it here. 
	return $ogdesc;
}