You are correct, unfortunately TurboTax doesn't support e-file for Form 7202. It must be attached to your tax return and mailed to the IRS.
Form 7202 is used by self-employed individuals to calculate an amount to claim for qualified sick and family leave equivalent credits on their 2020 tax returns. Here is a link to the IRS for more information about Form 7202.
@Beeazy06
