If you have a 1099-B from Robinhood, you can report them in the Investments and Savings section of TurboTax. This will create a Schedule D and 8949 on your return.
Here's how to import your 1099 from Robinhood into TurboTax Online:
Federal > Wages & Income
Investment and Savings
Stocks, Cryptocurrency, Mutual Funds, Bonds, Other (1099-B) > Start or Revisit
Choose to add investments, and when you see Let's import your tax info, type "Robinhood" and continue through the interview to import