I'm filing e file. And it's asking for last year's agi number. if I don't have access to get them then how do I find my number??

If you don't have a copy of your last year's tax return, you can request last year's tax transcript from IRS.gov. Your tax transcript will have your AGI (adjusted gross income). 

When requesting your transcript from IRS.gov you need to choose the tax return transcript type when making your request. Click here for a link to IRS.gov's get transcript page.