To lookup your Golf Australia Handicap or score history via MiScore App, you will need to be logged into your home club in order to access the Handicap link in the menu.
If handicap is greyed out in the menu, this would indicate that you have accessed the menu against the wrong club or have not logged in to your home club with your club membership number and password.
The initial time you access the Golf Australia Handicap history page, it will ask you to log in with your GA credentials.
If you don't have a GA account, please follow the links on their site.
If your home club is not on MiScore then you will need to access the GA site directly on your devices browser :>