See this TurboTax support FAQ for printing a tax return for mailing - https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online...
You have to print, sign, date and mail the federal tax return to the IRS and the State tax return to the State. The Filing Instructions page for each tax return will print out with the tax return with information on what needs to be mailed and the address for where to mail. You must include with each tax return the Form W-2 and/or Form 1099 that have taxes withheld on the form.
