I need to delete my tax return I'm on disability I tried to but won't let me

Did you file it?   If you haven't registered or paid or filed you can try to clear it.
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-online/00/26444

Otherwise you can just leave and abandon it.  

It doesn't do any harm to leave your tax return sitting in TurboTax. Nothing will be done with it if you don't file it. And having an unfiled tax return in TurboTax will not interfere with your disability or anything else. There is no need to delete it.