It really depends on the compound, how much and how long that you run it for. I think you have alot of research ahead of you if you are attempting to try anabolic steroids. You should try focussing on growing into a big boy.
Liver cells regenerate every 180 days, so u can do loads of damage to it more than likely it will eventually recover. The liver is an amazing and resilient organ, there's obviously a point where the liver is beyond repair but u would have to be really stupid to not recognize the symptoms.
Okay sorry to come off abit harsh. Orals are gonna be alot worse for your liver than injectibles. Thats why its only reccommended to do an oral cycle for 4 weeks and run a liver protectant like need to guard with it.