If you mean how do you delete a form you don't need just click on "forms" in the upper right side of your Turbo Tax screen. If it isn't showing the form you want to delete just find it in the list to the left and click on it. Once you have the form open you can click on "delete" which is at the bottom of the page.
If you were self-employed last year, you filed a Schedule C will transfer over when you start you new return this year. Use the instructions in the link below to remove your business from your return if you no longer had it in 2021.
How do I delete a prior-year Schedule C business that transferred over?
If you're planning to close a business, don't forget to put the IRS on your to-do list, because tax rules require you to keep the tax agency in the loop. TurboTax can help with reporting the sale of assets, final employment tax reporting and more. Closing a Business
If you need to start over in a lower version of TurboTax, see How do I clear and start over in TurboTax Online?