How do I put the headset on while wearing my prescription glasses?

First loosen the straps, pull the back of the headset and to make a wider opening, then with your glasses on, place your face into the front of the headset or place your glasses in and then put on the headset. Adjust the straps for a comfortable fit.

There is some additional information on this page regarding size requirements for glasses with the Oculus Go: https://support.oculus.com/1979626618916763/?locale=en_US

and Quest: https://support.oculus.com/307245736720922/?locale=en_US