How do I file my Business taxes early for tax year 2020?

I recently used TurboTax business for filing my business' 2019 taxes, but I'm not finding how I can do the same for my tax year 2020 business taxes. I will be dissolving the business this month (July) and would like to wrap things up with the IRS (hence 2020 is the last filing year). We have been inactive all of 2020, so we have no income, expenses or assets.