Congratulations. If my daughter’s case is a precedent, the notice will be for you to go into a uscis office to receive the certificate in person, you take an oath over a certain age but I don’t recall what that age is, and hand back any green card, travel document etc that identified you as a LPR. I guess you will only get the actual notice to do that when uscis offices are scheduling appointments again.
Thank you for all your help and support. Yeah they said scheduling interview. That's most likely the oath thing they would like me to do. Im 18 going on 19 by the time of interview. And yeah since the office are closed for in person visits the interview will probably be in June based on what their site says.