With Frontend Submissions, each Vendor has its own Shop page, which is an archive of its products. The parent Vendor page is a normal WordPress Page with the [downloads] shortcode on it. You can choose what page that is in FES > Settings > Forms/Pages.
Assuming your Vendor Page has a slug of “vendor”, then you can append the username of any vendor to the URL to get that vendor’s personal Shop page.
Example with the Vendor being used in this documentation: http://eddstoredomain.com/vendor/vendorredirecttest/
Below is an example of Vendor Shop page.