Hi @bnafzinger
That’s because the “Post Taxonomy equals My Product Category Name” rule works on the post editor page, not the category editor page. If you want it to show on certain term page editor, I’m afraid you need to create a custom location rule. This page should give you more idea about it: https://www.advancedcustomfields.com/resources/custom-location-rules/.
Hope this helps 🙂