On your B2B store, you can filter your products by categories or brands by default. You can enable a third filter, to filter your products by the product tags that you set up on the web app.
To enable the product tag filter, under B2B eCommerce > Visit your B2B store (top right-hand corner). On the Admin Panel (left-hand side of the page; if it does not appear, click on the top left-hand corner icon)> Products > check the box "Display Tag Filters"
Click "Save all changes".
You can now access filter by tags on your B2B Store.