Apple ID hides my email but need access to that masked email

i sold a item on eBay but accidently set everything up with Apple Pay and had the setting hide my email on so all my payments went to a specific masked email that relays to my regular email for security reasons but the problem is I need to verify that email because my eBay payment on PayPal went to that specific masked email. I need access to the email that Apple shows as my email this *********@privaterelay.applied.com Please help bc I need to verify this email is mine