How to display the value of one custom field from a specific category?

Question

WordPress

Good evening,
There is a heading "R" and there is an arbitrary field "P". We need to get the values ​​​​of an
arbitrary field "P" from all posts in the "P" category

Answer 1

Here is an example, instead of cost_1, you specify the id of your
Price field: <?php echo get_post_meta( $post_id, 'cost_1', true ); ?>