That would be an investment sale in TurboTax. You enter investment sales in the Wages and Income section of TurboTax, then Investment Income, then Stocks, cryptocurrency, Mutual Funds, Bonds, etc... Choose Stock, Bonds, Mutual Funds as the type of investment you want to enter. You can choose to upload your From 1099-B or you'll come to a screen where you can enter in your sales proceeds and cost basis.