How i get a 1040 form for id verification

Please explain what you are trying to do.  With whom are you trying to verify your identity?  A tax return does not prove identity.  Are you needing a copy of a past tax return for a lender, etc.?  Or something else?

Or do you mean you need your 2017 Form 1040 to get your AGI so you can e-file for 2018?

https://ttlc.intuit.com/questions/3404575-how-do-i-access-my-prior-year-2017-return

You can get a free transcript from the IRS:   

https://www.irs.gov/individuals/get-transcript

How do I get a copy of a return I filed using online TurboTax?

https://ttlc.intuit.com/questions/1900748

How do I get a copy of a return I prepared using desktop TurboTax?

https://ttlc.intuit.com/questions/1900639

https://ttlc.intuit.com/questions/3355524-when-does-access-to-my-prior-year-turbotax-online-returns-expire

Note:  Every year, before mid-October, print a copy of your current year tax return and save it as a tax file and pdf, too.  That way you will have it when you need it for school, a loan, next year’s tax return, etc. without going through a lot of aggravation (and expense)  to get it.

https://ttlc.intuit.com/questions/1899645-how-do-i-save-my-2018-turbotax-online-return-as-a-tax-data-file

https://ttlc.intuit.com/questions/1912544-how-do-i-save-my-2018-turbotax-online-return-as-a-pdf

Need it for id verification