Hi Amanda, are you referring to your OpenLearning username ? Or an ID number that was given out by your university or institution?
To find your OpenLearning username, login to our website, click on your Display icon at the top right corner of the page and click on My Profile. You will then be able to see your username from the URL of this page, example - https://www.openlearning.com/u/YOURUSERNAME
If you are given an ID by the institution and it's linked to OL, you can find it from your Account Settings -- University Name and ID.
Hope this helps, if you need further assistance, kindly email us at firstname.lastname@example.org with a full detail of your query and your username / registered email address .