[HotGrbg]

That’s a ton of oil. Do not drive it, that’s a real fire hazard. I’ll speculate you need a new valve cover

 

[HotGrbg]

10 liters is far too much as you suspected.
N20 WILL NOT READ OVERFULL on the electronic display. I would maybe take it to someone else who’s not a drooling idiot to have a proper inspection and oil change done. There’s a good chance putting 10L will ruin your engine.

 

[HotGrbg]

You should drain ALL of it out and THEN add the proper amount as required by your engine designation.