Please explain more. Sales should be on a 1099B. Or what did you sell? A 1099INT is only for interest paid to you.
To clarify, are you asking about entering interest earned from Form 1099-INT or something else?
I entered the interest on the form. However, I need to enter the sales proceeds in turbo tax. Where can I find that?
Are you referring to sales proceeds that are reported on a 1099-B? If that's what you are trying to input, it is reported under the Investments and Savings Section of Wages & Income.
Review the TurboTax Help article Where do I enter or import a 1099-B? for navigation instructions.
For more information on broker transactions, refer to the TurboTax article What is Form 1099-B: Proceeds from Broker Transactions?