The Blender version is usually at the bottom right of the screen:

There is a neat word of advise at the start of courses about Blender versions here:
a-word-about-blender-versions
It gets a bit used to, but don’t worry about the Blender version, Sculpting has been getting other tools as Blender gets updated, but the art of sculpting never changes, the fundamental modus operandi is 95% the same. You can use 2.81 and be a master sculptor same as using 4.0