how do i change my address on my account

You want to change your billing address on your Apple Card Mastercard account?

>> Update your billing address

1. Open the Wallet app on your iPhone and tap Apple Card.
2. Tap the More button , then tap Card Details.
3. Scroll to Billing Address, then tap your address.
4. Tap Update Billing Address and provide your new information. <<

Update your Apple Card account information - Apple Support