You will not be able to clear and start over from scratch if you paid, but if you need help to delete the incorrect information that was entered, contact customer support for some help to fix the mistakes.
To call TurboTax customer support
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
Customer support is available from 5 a.m. to 9 p.m. Pacific time daily