How to read the screen size

Questions
1

I want to scale the screen but I need to see if there is a way to read the size of the screen

2

The variables WIDTH and HEIGHT give the screen size, but their values don’t change when you use the scale(x,y) function. If you use scale(2,3), then the screen width is WIDTH/2 and the height is HEIGHT/3.

3

@pac when the app is launched onto a different device, the variables WIDTH and HEIGHT will automatically become the current width and height dimensions of the screen

4

Thanks