No, you don't need to report the sale of a home, since you sold it in 2018, on your 2020 income tax return. The sale of your primary home in 2018 was not an investment income. The Form 8949 is used to report sales and other dispositions of capital assets. You may elect not to use the exclusion, but if gain was over $250,000, you may have to pay capital gain on the amount over $250,000.
To add Form 8949, you may have to upgrade to a CD/Download software versions of TurboTax and the online and mobile app versions of TurboTax Premier, TurboTax Live Premier, TurboTax Self-Employed, and TurboTax Live Self-Employed
