A Screen Design is just a plan for how and where you intend to put things on the screen. There are usually many things you need to put on the screen, such as the player's score, number of lives left, Game Logo, level number, information messages, or whatever.
a visual way of interacting with a computer using items such as windows, icons, and menus, used by most modern operating systems.
So what is one of the software that can develop Screen Design?
- Photoshop
Below are the sample of Screen Design/ UI/ GUI
How to plan a good screen layout?
Drawing can help you in the earlier stage.