It all depends on where it fell, glass is not indestructable not even gorilla glass.
If a piece of sand or gravel hit that screen at the right angle it would definitely scratch or shatter, all glass is in danger of that, maybe a sharp blade or steal wool won't do anything but a piece of sand will.
By the way gorilla glass is tempered which makes it stronger but it will shatter unlike other kinds of glass that would just crack