Select "Buy Bitcoin" and choose "American Express Gift Card" as your payment method.
While each platform varies slightly, the general procedure for a P2P trade is as follows:
Enter the amount of Bitcoin you want to buy. This will open a private chat with the seller and lock their Bitcoin in the platform's escrow .
A non-custodial P2P marketplace where you can find individual sellers willing to accept Amex cards. Step-by-Step Purchase Process (P2P)