I need assistance with what information I need to file a stock that went bankrupt.

[MichaelL1]

OK in the year the stock became worthless show the sales price of $0 (if that is what you got) and the date it became worthless.  You will enter your purchase date and the cost of the stock and then TurboTax will compute your loss on the stock.

In your TurboTax go to: 

Federal Taxes

Wages and Income

Investment Income,

 Stocks, Mutual Funds, Bonds, Other

For your tax records keep information that the stock has become worthless.