ForScore's screens adjust in height to a certain extent. But there is a certain minimum height they require.
Computer monitors are measured not just by size in inches, but by how many dots (called "pixels") are on the screen.
If your screen is less than 768 dots high, some of ForScore's windows will be hard to see (you may have to scroll down to get to the buttons.)
You may get a warning if your screen resolution height is set to less than 768. You can usually adjust this setting in Windows.