What if I did not door dash in 2021?

Yes, you can delete it. You had no 2021 income, so there is no reason to include Schedule C. You ask about 2020 information. Did you take any section 179 or bonus depreciation in 2020? If so, it will have to be recaptured.

Here's the general procedure for viewing the forms list and deleting unwanted forms, schedules, and worksheets in TurboTax Online:

1. Open or continue your return in TurboTax.
2. In the left menu, select Tax Tools and then Tools.
3. In the pop-up window Tool Center, choose to Delete a form.
4. Select Delete next to the form/schedule/worksheet in the list and follow the instructions.