Downloading app

Double click your side button (lock button). It will activate FaceID to verify your person, then it will install the app. Much like older versions before iPhone X say press your thumb on the home button to activate TouchID.

Hope that helps!
CrashBurner

Double click your side button (lock button), to activate FaceID to verify the transaction. Much like iPhones before the iPhone X required you use TouchID to verify the purchase.

Best of luck and hope that helps!

CrashBurner