How do I send money to a person using apple pay

On your iPhone or iPad

1. Open the Messages app, then start a new conversation or tap an existing one.
2. Tap the Apple Pay button . If you don't see the Apple Pay button, tap  first.
3. Enter the amount you want to send.
4. Tap Pay, then tap the send button  to review or cancel the payment.
5. Confirm your payment with Face ID, Touch ID, or your passcode.

If the person you sent money to has not accepted the money yet, you can cancel the payment.

Respond to a request for money

1. Open the request in the Messages app, then tap Pay on the message.
2. Review the amount to send. Tap Pay to continue, or change the amount.  
3. Confirm using Face ID, Touch ID, or your passcode and send your payment.

To decline a request for money, just ignore the message.

Let me know if it works! :)

See instructions in Send and receive money with Apple Pay - Apple Support