Hello,
To create a page that displays collections and categories when you click “Shop,” you can follow these steps:
In Theme Settings > Shop configure the shop layout to show categories.
If you want to create a custom template for a shop page, using the Theme’s Layout Builder you can create Custom Layouts for WooCommerce pages like Shop, Category, Single Product page, Cart and Checkouts. So, you can use that to create your own custom layouts for these pages.
Further, you can read more about the Layout Builder here: https://xtemos.com/docs-topic/woodmart-woocommerce-layout-builder/
Best Regards