You can view the UPC assigned to your release on the 'Your Music' page, once logged in to your Record Union account.
Choose Menu > Your Music > Submitted and all of your published releases that have not been taken down will be displayed. Click the three dots on the upper right corner of the release in question > View detailed information.
Here you'll find all the available information about the release, including the UPC.

Written by Goms
Updated over a week ago