abused as a child...

What is the name of your state? Ohio

I was abused by my stepmother growing up... I am 21 now, can I sue or do anything for being wronged as a child?

A lot will depend on the situation and PA's laws regarding statutes of limitations. "Abused" can mean anything from "Stepmom made me cook and clean every day" to "Stepmom hired me out as a hooker." Without more information, noone here can help you.