iPhone: go to Settings > Wallet & Apple Pay > scroll down to Transaction Defaults and update your delivery address, email address and phone number.
Apple Watch: in the Apple Watch app on your iPhone, tap Wallet & Apple Pay > scroll down to Transaction Defaults and update your delivery address, email address and phone number.
iPad: go to Settings > Wallet & Apple Pay > scroll down to Transaction Defaults and update your delivery address, email address and phone number.
Mac with Touch ID: in System Preferences, go to Wallet & Apple Pay > Click Contact and Shipping, and update your delivery address, email address and phone number.