Shortcode – wishlist_single

[wishlist_single id="123"]

Or

<?php

// Wish list id
$post_id = get_the_ID();
echo do_shortcode( "[wishlist_single id=$post_id]" );

?>

This shortcode use to display single wishlist page with item list.

How to create custom single page for wishlist?

You can create custom template for wishlist page, you will need to copy and create  single.php to  single-wishlist.php and under the content you can use following shortcode.

<?php

// Wish list id
$post_id = get_the_ID();
echo do_shortcode( "[wishlist_single id=$post_id]" );

?>