Yoast SEO title snippets

yoast_seo_title_remove.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/
/* Remove Yoast SEO Title From All Pages
 * Credit: Yoast Team
 * Last Tested: Aug 11 2017 using Yoast SEO 5.2 on WordPress 4.8.1
 */
 
add_filter( 'wpseo_title', '__return_false' );

yoast_seo_title_remove_post.php

<?php
/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/
/* Remove Yoast SEO Title From An Individual Post/Page/CPT
 * Credit: Yoast Team
 * Last Tested: Aug 11 2017 using Yoast SEO 5.2 on WordPress 4.8.1
 *********
 * DIFFERENT POST TYPES
 * Post: Change 123456 to the post ID
 * Page: Change is_single to is_page and 123456 to the page ID
 * Custom Post Type: Change is_single to is_singular and 123456 to the 'post_type_slug'
    Example: is_singular( 'cpt_slug' )
 *********
 * MULTIPLE ITEMS
 * Multiple of the same type can use an array.
    Example: is_single( array( 123456, 1234567, 12345678 ) )
 * Multiple of different types can repeat the if statement
 */
 
add_filter( 'wpseo_title', 'remove_one_wpseo_title' );

function remove_one_wpseo_title() {
  if ( is_single ( 123456 ) ) {
    return false;
  } 
    /* Use a second if statement here when needed */
}

Hi there, i'm facing problem when try to read Yoast var inside category template.
If i try to print the title with wp_title(), i get the correct snippet rewrite from yoast, but i'm not able to read description.
I did
get_term_meta($category->id, '_yoast_wpseo_title' ,true);
get_term_meta($category->id, '_yoast_wpseo_metadesc' ,true);
always return empty values. My question is how to read title and desc snippet by code side?