So I know that for a UI Frame to be a full screen it is 1,0,1,0 and the position is 0,0,0,0
But the problem is that if I did 1,0,1,0 and positioned it 0,0,0,0
There would be that little bar at the top, which would show
So I am asking for an solution what am I doing wrong
Am I right to size an GUI Frame 1.2 on the y axis of scale and then position it -0.2 on the y axis?
Or Is there something im missing here
I don't understand
I thought 1,0,1,0 was for the full screen

2 comments
No, you got it all correct, the problem is the TopBar doesn't count as screen so your frame isn't going through the TopBar. But yea, use -0.2 on the Y axis and keep it at 1.2 y scale and it should be all fine.
You don't need any fancy positioning or sizing, fill the screen as normal and enable the IgnoreGuiInset field.