Did you have health care coverage provided to you from one of the State Marketplace Exchanges or through healthcare.gov? If so, you would have received a Form 1095-A for that coverage. You were supposed to enter the 1095-A on your federal tax return. The Form 8962, Premium Tax Credit, would have been created after you completed the entry of the 1095-A.
See this TurboTax support FAQ for the Form 8962 and Form 1095-A as requested by the IRS for 2019 - https://ttlc.intuit.com/community/health-care/help/the-irs-is-requesting-form-8962/01/27409
