This is my first play this game. I usualy played games when I got level up I can distribute points to stats, skills etc.. And in this game I got new level and nothing. I tried search online about stats, and found some builds, but why there are builds if I can't modify stats on level up? Or I miss something?

Yes, stats are automatic and depend solely on your class at the moment of levelling up.
Ppl who do those builds refer to changing your class past level X to gain Y amount of levels as that class.

It's an action game, only pretending to be an RPG, and stats are only a tiny part of combat efficiency (class dependant).

Thanks zadymek fro info.