I need to finish up my taxes in the last part is they need my EIN number and I have no idea what it is where can I find this please and thank you

If you are self employed then the business EIN is entered in the Bus Info section of the Sch C interview ... if you put it in before and transferred the info from last year then it should already be there.

BUT  are you really asking  about the prior year AGI  to efile  the return ? 

If you never established a EIN for your business then it is your social security number. If you want an EIN for the business https://www.irs.gov/businesses/small-businesses-self-employed/apply-for-an-employer-identification-number-ein-online