Review Detail of XeternityXIII in Great exp book

ey man,...whats the point of getting xp? Do you get a prize or badge? I see some shit like this and also comments that sometimes reply to me with just xp. You get something? could ya tell? Also this daily shit, I sometimes dont click collect in the claim rewards shit. do I still get it?

By collecting more exp you level up by leveling up you get more Free pass per day and more power stones per day.