If you need to file a final Form 1065 for the partnership, the TurboTax product is TurboTax Business (and note that you should seek professional guidance for this scenario).
See https://turbotax.intuit.com/small-business-taxes/
TurboTax Business can only be run in a Windows environment; there is no online or Mac version.
As far as timing, Form 1065 must be filed by the 15th day of the 3rd month following the date the partnership tax year ends. The partnership’s tax year ends on the date of termination, which is the date the partnership winds up its affairs.
Form 8594 may also be required to be filed and that form is attached to your income tax return for the year in which the sale occurred.
See https://www.irs.gov/instructions/i8594#idm140044366570528
You should seek professional guidance, and probably professional income tax preparation, for this scenario.
