Last year my i filed my taxes under my parents and i dont rememberer what i got back but when i file it wont let me put 0 even tho im filing alone this year

[Anita01]

If you mean your parents claimed you as a dependent and put your unearned income on their return, then you say you did not file a return last year.  I'm assuming this is what you mean because there's no such thing as filing a return under somebody else, but you can be a dependent on somebody else's return.