The answer to this issue depends on why TurboTax is looking for a Schedule C. If you are seeing this message in Review, what else is being shown on the screen with the Review message?
Did you enter income from a Form 1099-NEC or 1099-MISC? Or a Form 1099-PATR? Depending on your answers to the questions in those sections, TurboTax may conclude that you have a business.
I entered a 1099-NEC, I did rideshare with Uber. Had the same issue last year, but it randomly resolved after deleting all my forms multiple times.
If you entered a 1099-NEC then you are a sole-proprietor with a schedule C. You are a self-employed rideshare driver. You should be entering the income from the 1099-NEC as well as any expenses that you had.