I'm glad you made it here, userjeribaskin50.
Employer Identification Number (EIN) is composed of a nine-digit number issued by IRS. To review your EIN, you can visit the IRD website: Employer ID Numbers
If you need to update your EIN in QuickBooks Online, here's an article for the steps: Change your business name, contact info, or EIN in QuickBooks Online.
I'll be right here if you need help with anything about QuickBooks. Wish you all the best.