He's 15 but has an illness that effects his growth so he stopped growing at age 8. I believe he recently had brain stem surgery or something very serious.
50 just kills some verses, and he sucks a lot too. I think he is slightly underrated b/c of how it's cliche to say he's overrated + he's waaaaayyyy too rich for his talent level. All things considered I'd say he's a 6/10 compared to whats out there (which includes a whole lot of crap).