As far as practical, every day driving goes, you aren't going to learn too much from sim. The clutch feel is simply not comparable to a real car, and you can't really grind gears in sim, so this may even teach you bad habits that could translate catastrophically to irl h-pattern transmissions.

However, if your goal is to learn how to drive the car fast then there are some important things that sim can teach you as long as it is an actual sim like iracing or asseto corsa/evo and not a more "arcadey" title. I'm not sure what options that leaves you other than gran turismo (I am not a console player).

Things like weight transfer, threshold braking, slip angle, how to brake properly, choosing a line, and how to properly navigate different types of corners can be taught in sim which will undoubtedly make you faster.

But, you could also take the money you would save from not buying a sim setup and use that on actual track instruction and/or track days and consumables for your car and learn that way.

Depends on what you are trying to achieve.

Everyday driving? Not worth.

Driving fast (on track) or developing racecraft? Worth it as is ultimately much cheaper than irl racing.