I was told to fill out form 8594 this year buy the purchase of my business. they said they need to match so it doesnt throw any red flags. how do i file that on turbo tax

You can download the form from the IRS site below, but the personal editions of TurboTax do not support Form 8594.

See https://www.irs.gov/pub/irs-pdf/f8594.pdf

Note that if are using TurboTax Live, you might be able to receive assistance in preparing this form.

the form must go with your return so you will not be able to e-file.