I use Brooklyn theme but “Compare at price” does not appear in the Collection section
Happy to help here! Can you tell me are you looking on the collections page itself? or on the product page?
If it is on the collections page it is likely that it would display by default there and it might need additional coding, however, it should work on the product page itself.
If you can clarify I can offer the best next steps. Could you also tell me if you have modified this theme at all through it’s code?