What form do I need if I have no income and a 1095 form to file for marketplace health insurance .

If all you have to report is a form 1095-A  for the Premium Tax Credit, you can use 1040A. You can also use Form 1040, but your situation can be handled by the simpler 1040A.

If you are preparing your return using TurboTax Online, you can use the Free version.