Use rewards cards on Apple Watch
If you have a rewards card from a supporting merchant, you can add it to Wallet, then present it to a contactless reader as part of your transaction using your Apple Watch.
Add a rewards card to Apple Watch
You can add a rewards card from an email or website link, a message, or from a notification sent to your iPhone.
Email or website link: Look for an “Add to Apple Wallet” link. Tap the link to add the rewards card to Wallet.
Notification: After paying with Apple Pay and providing your rewards card information, you may get a notification on your iPhone that lets you add that card as a rewards card. Tap the notification, then tap Add.
Message: Tap a card sent to you in Messages.
Use a rewards card on Apple Watch
When you’re prompted to provide your rewards information (and you see the Apple Pay logo), hold your Apple Watch within a few centimeters of the contactless reader, with the display facing the reader.
By default, Apple Watch displays the rewards card so you don’t need to scroll to it.