You can’t duplicate a product page directly, but you can recreate it by generating a new page from an existing template.
Steps
In Shopify, go to Apps → Atlas AI Store Builder → Your Stores.
Find the theme you want to add a page to and click + Add product page.
In Add product page, choose the destination theme (where the new page will live).
Check Generate product page based on existing template.
Select the source theme that contains the page you want to copy.
Choose the template to base the new page on.
Pick the product source.
Click Proceed. When the process completes, you’ll have a new product page with the same layout as the one you selected.
Important
This feature only works between Atlas themes of the exact same version. If a theme doesn’t appear as a source, it’s likely a version mismatch.