At age 18, you can still be claimed as a dependent on someone else's tax return.
CAN I FILE A RETURN IF I AM A DEPENDENT?
If you can be claimed as a dependent on your parents’ return, you can still file your own return so that you can receive a refund of taxes withheld. (You will not get back anything for Social Security or Medicare withheld.) Be sure that on your own return you say that you can be claimed as a dependent on someone else’s return.
If you can be claimed as a dependent and you answer the question in My Info incorrectly, here is what happens if you e-file first: Your Social Security number goes into the IRS system as having been used. When your parents try to e-file, their e-file is rejected and they will find it impossible to e-file their own tax return. Then they will have to print, sign and mail their return and wait for months for it to be processed. You, meanwhile, will have to file an amended tax return on a special form called a 1040X, which also takes months for the IRS to process. So make sure you know the correct answer to "Can anyone claim you as a dependent on their tax return?"
@kaitlynnb And----oh my goodness. You are posting your question from the VERY expensive Full Service Live software. Get out of that.
CLEAR AND START OVER
https://ttlc.intuit.com/questions/2586254-how-do-i-clear-and-start-over
You either need to use Free Edition or try one of the free software programs available on the IRS site.
Use this IRS site for other ways to file for free. There are 8 free software versions available from the IRS Free File site