If you have proof of full year med insurance coverage during tax year 2019 then check it even if you don't have that form.
You may have indicated somewhere in the interview that you got your health insurance from the marketplace, or that you have a Form 1095-A.
If you didn't have marketplace health insurance, you can use the "Delete a form" option in TurboTax Online to delete the 1095-A form in your tax return.
But, if you did have marketplace health insurance, the IRS will be looking for a Form 1095-A in your tax return, and will hold up processing the return until they get a response to the letter they'll be sending you. So, if you did have marketplace insurance, the best thing to do is get a copy of the 1095-A and enter it before you file.
This link has the following instructions for deleting a form in TurboTax Online:
Hello, I went to the delete the form section and do not see form 1095a. Would it be on another form?