What version are you in? You need to use Online Premium to enter captial gains. Did you get a 1099B for the capital gains?
Enter a 1099 B under
Federal Taxes on left or Personal (Home & Business)
Wages & Income
Then scroll down to Investment Income
Then Stocks, Cryptocurrency, Mutual Funds, Bonds, Other (1099-B) - click Start
Then click +Add Investments at the bottom
If, by "enter long term capital gain", you mean you want to enter the total capital gain distribution from box 2a of the 1099-DIV, you can not do that in the free edition of TurboTax (TT). You will have to upgrade.
In TurboTax (TT), enter at:
- Federal Taxes tab (Personal in Home & Business)
- Wages & Income
Scroll down to:
-Interest & Dividends
- Dividends on a 1099-DIV
A capital gain distribution, shown in box 2a of a 1099-DIV, is NOT entered on form 8949. It goes on line 13 of Schedule D. In TT, it gets there just by entering the 1099-DIV. Even though it is on this special line, it still gets combined with other capital gains and losses, shown on form 8949 and Schedule D for the special capitals gains tax treatment.