Is there a room where you can ask to duel somebody
Maybe in the Arena Waistworks ???


And I have a Ring with Telekinese What can you do with it ????
Is it for replacing a object or ....

You can get a mod that lets you duel in the arena. If you complete the Imperial Legion and Mages Guild quests you get to duel in the arena (or you can). Otherwise you get to watch one duel on a House Redoran quest. I think that's about all of it.

Telekinesis, from the Greek Tele 'far', kinesis 'movement'. It enables you to manipulate objects at a distance. You can open locks while hiding behind a pillar, steal things, ditto.

If you levitate and use telekinesis to steal objects you usually get away without being seen (not always), helpful with several Thieves Guild quests.