I was told to get help with my child at college I need to file taxes in the state of Georgio, I was told I need w2 to file but I have no income, and what is w2?

A W2 is a end of the year statement of earnings from wages.
You must have an income, just not from a job, right? Government benefits of some sort, alimony?
How old is your child, and is he or she a full time student? Does he have any income?