Hi,
Sorry for late delay, this is a part-time project for the moment.
When searching options to add specific post type to be searchable, I found this option:
https://wpdynamic.com/wordpress-developer/wordpress-code-snippets/how-to-include-specific-custom-post-types-in-wordpress-search-results/
But I’m not sure how to define the store slug (from the database), to make stores searchable, but not allowing a customer user.
Thanks!