How do I find my 1994 tax documents in turbotax?

1994?   Sorry----they are long gone.   TurboTax and the IRS save returns for seven years.

for the past 3 years save a copy of each year's return to your computer. Turbotax only supports the current year and the 3 prior years. after that you would not be able to open the tax return to print or save a copy. you could get a copy from the IRS for any of the last 7 years, but you must submit form 4506 for which there is a fee currently $30/year.