Here are TurboTax FAQ links, included below, to help you delete information and deactivate an account if you created one.
How do I deactivate (delete) my TurboTax online account?
How do I delete info I’ve entered into the online edition of TurboTax?
I would like to purchase the downloadable version of Turbo tax 2020. How do I deactivate the online version that I signed up for in error?
Follow the instructions in this link to deactivate your account:
https://turbotax.community.intuit.ca/community/navigating-turbotax/help/how-do-i-deactivate-delete-my-turbotax-online-account/00/873776
I hope this was helpful