Reply To: How Can I show just one category?

Hello,

You need to edit the Home Page with page builder and edit the products categories widget in the page builder which you are using and select the specific category:
Screenshot for clarification:
https://ibb.co/Dp2Gr4c

For the archive pages, try to use a custom layout to achieve this. Here below are the documentation articles:
https://xtemos.com/docs-topic/woodmart-woocommerce-layout-builder/

Best Regards.