I started a small business tax return and want to change it to a personal tax return. Ho do I do that?

I'm not clear on your question. My screen indicates you are using TurboTax Self-Employed, which is used for filing a personal tax return that includes a sole proprietor type business, or single member LLC that the tax filer owns. With the online version of TurboTax Self-Employed, you use that version to file your personal tax return, if you also have business income from your single owner business (that only you own) to report.