I am trying to delete a card but I don’t know how

Delete card from Apple Wallet or Apple ID payments.

To remove a card that you use on your iPhone or iPad, go to Settings > Wallet & Apple Pay, tap the card that you want to remove, then scroll down and tap Remove This Card. , then scroll down and tap Remove This Card.

Manage the cards that you use with Apple Pay - Apple Support

Change, add, or remove Apple ID payment methods

1. Open the Settings app.
2. Tap your name, then tap iTunes & App Store.*
3. Tap your Apple ID (which is usually your email address), then tap View Apple ID. You might be asked to sign in.
4. Tap Manage Payments. ( If you're using an older version of iOS, tap Payment Information.)

Change, add, or remove Apple ID payment methods - Apple ...