Basically, since a partnership can not exist without at least two owners, that means the partnership terminated on the closing date of your buyout/acqusition of the business. So the partnership will be filing a final return, and you will be filing your first SCH C.
While all this is perfectly possible to accomplish with TurboTax, the laws on this can differ greatly state-to-state. If the partnership had assets that were being depreciated and now you own those assets 100%, this can get quite complex. I would highly recommend you seek professional help for this for at least the 2020 tax year to ensure all the tax paperwork is done correctly and completely. Than after that if you're comfortable with it, you can continue the SCH C yourself starting with your 2021 tax return.
