Unless required by law in your country or region, funds in your Apple Account are not refundable.
click here ➜ Check your Apple Account balance - Apple Support
If cash refunds are required by law
You can’t redeem or return Apple Gift Cards, App Store Gift Cards, or unused Apple Account balance for cash, except as required by law. If your jurisdiction allows for refund of redeemed gift balances, you can contact Apple Support to request a refund. When you contact Apple, include the following information:
- The primary email address that you use to sign in to your Apple Account
- The refund amount
- Your current shipping address
Do Note, Apple Pay does not hold any money. It is not an account, it's a payment conduit. You may have tried to add money to Apple Cash
Apple Cash is not Apple Pay, it can be used with Apple Pay to make purchases in store and website that support Apple Pay.