How can I pay my Apple Card payment with my credit card?

Banks don’t permit payment of loans (credit cards) with other credit cards. However, for a fee, you can transfer funds from a credit card to your Apple Cash account and use Apple Cash to pay your credit card payment. You can also find your Apple Card account with a debit card or bank account for free.

How to add money to Apple Cash

After you set up Apple Cash, you can add money to your balance using the debit or prepaid cards that you already use with Apple Pay in Wallet. If you don’t already have one of these cards in Wallet, you need to add one before you can add money.

1. Go to your card info:

• • iPhone: Open the Wallet app, tap your Apple Cash card, then tap the More button . 
  • iPad: Open the Settings app, tap Wallet & Apple Pay, then tap your Apple Cash card.
  • Apple Watch: Open the Wallet app, tap your Apple Cash card, then tap Card Balance. 

1. Tap Add Money. 
2. Enter an amount. The minimum is $10.
3. Tap Add, then confirm the U.S. debit or prepaid card2 that you want to use to add money, and confirm the correct billing address. To use a different debit or prepaid card, tap the arrow  next to your card, then choose a card. 
4. Confirm with Face ID, Touch ID, or passcode.

To make sure that your balance is updating, you need a cellular or Wi-Fi connection.

Add money to Apple Cash - Apple Support

After adding funds to your Apple Cash account you may pay your Apple Card statement.

Make a one-time payment

Watch the video to learn how to make a one-time payment on your Apple Card balance >

On your iPhone in the Wallet app, you can make an immediate one-time payment or you can schedule a one-time payment.

Pay now

To make an immediate one-time payment, follow these steps:

1. Open the Wallet app on your iPhone and tap Apple Card.
2. Tap to pay.
3. Hold and slide the payment wheel to choose a payment amount.
4. Tap Pay Now to instantly make your payment, then follow the instructions on your screen.

How to make Apple Card payments - Apple Support

Sorry, but Apple Card payments are to be normally executed electronically as described in the cardholder agreement.

https://www.goldmansachs.com/terms-and-conditions/Apple-Card-Customer-Agreement.pdf

and

How to make Apple Card payments - Apple Support

However, suggest you contact Goldman Sachs directly via your Wallet App to inquire how you might pay-off / pay-down your Apple Card w/ a transfer from another Card.