How to change the instant cash out card on wallet
How do I change the debit card I can cash out from app cash
See the following steps from Transfer money in Apple Cash to your bank account or debit card - Apple Support
(see the preceding Apple Support article for all steps)
4 - If you haven't added an eligible debit card, tap Add Card and follow the instructions on your screen to add a Mastercard or Visa debit card.
5 - Tap Transfer. Then tap > to select the debit card that you want to transfer funds to and select the billing information for your chosen debit card.