Refund

Not if you used Apple Cash - Apple Cash cannot be refunded if you have been the victim of a scam. There is no buyer protection for Apple Cash. You must report it to the police and report it here - Get Support. If the scam happened on social media (Facebook/Instagram, etc.) you need to let them know as well.

If you used regular Apple Pay yes.

If you see a transaction you do not recognize or have an issue with a transaction open Wallet>tap on the card used>tap on the transaction (photo 1)>tap on the amount (photo 2)>look for a report an issue link. (photo 3)

photo 1 - select the transaction

photo 2 - click the amount

photo 3 - click the link