Tap the Rewards tab :)! You'll see a list of locations that you can scroll through to review your available rewards. If you tap a location, you'll see all of your rewards for that location in one place, as well as your loyalty progress if they happen to have a loyalty reward available to unlock!
You can also swipe to the Rewards Progress tab to view your progress at all nearby locations. Note that you may need location services enabled to view nearby spots!