Hi. I need a help. I trying to create setting for my game and i want to do resolution setting with slider but i dont know how. Can anybody help me?

First you need to read all avaiable resolutions for your device. For this i think you need C++.
Then you need to set game resolution with Execute console command node
This is described there: how can i change game's resolution in blueprints - UE4 AnswerHub

PS. Rama Plugin can give you list of resolutions, google for it.