I need last year taxes Return need wife AGI

Did you and your wife file separate returns last year?

If you filed a joint return for 2017, then you both have the same total AGI.  You do not divide or otherwise allocate it.

How was your 2017 return prepared--in Online TurboTax (web version) or the desktop software (CD/download)?

If you filed with TurboTax or have an original copy of 2017 tax return, check here  2017 AGI.

Or 

The best and fastest way to access the 2017 AGI is to order a transcript from the IRS.  Click here  Get Transcript  and select "Get Transcript Online " On the transcript, look under section "Adjustment to Income" and find the amount for Adjusted Gross Income.