How to create separate template for Woocommerce parent category?

Question

WordPress

Is there something like wc_is_parent_category()?

Answer 1

Get all categories of product taxonomy.
More or less like this:

$terms = get_terms( array(
    'taxonomy' => 'product',
    'hide_empty' => false,
) );

Go through the foreach list and see who has parent == 0. If parent == 0 then add id to the array of parent categories.
After the end of the loop, you will have an array with all parent categories.
Did I understand the question correctly?