I am self employed but cant file until I have my EIN...where do I find this and can I find it in last years tax return? As I am employed through the same company as last year

If you are self-employed, applied for and received and EIN from the IRS, then you should know the EIN for your business.  If you entered an EIN on your Schedule C for 2018, then download the PDF of the 2018 tax return if you used the TurboTax online editions.

What exactly do you mean when you said "As I am employed through the same company as last year"?

If you are self-employed you are not an employee, you are the owner of the business.

Or are you an employee and receive a W-2 for your income each tax year?

To access your current or prior year tax returns sign onto the TurboTax website with the userID you used to create the account - https://myturbotax.intuit.com/

Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show.  Click on the Year and Click on Download/print return (PDF)

See this TurboTax support FAQ for accessing prior year online tax returns - https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/01/270...

If you used the desktop CD/Download editions installed on your computer, the only copy of your tax data file and any PDF's will be on the computer where the return was created.  TurboTax does not store online any returns completed using the desktop editions.