Who is asking for that?   If you used TurboTax to prepare a tax return, you would not have a form 8879, because your return was "self-prepared".  TurboTax provides "do-it-yourself" tax software.    That form 8879 is only used by paid professional tax preparers.   
 
See this other post on the same issue:
https://ttlc.intuit.com/community/after-you-file/discussion/i-need-my-form-8879-how-do-i-get-this/00...
 
					
				
			
			
				
	**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**