Recordings from Meets are stored in your Google Drive in a folder called "Meet recordings." If you are still in the Meet, you need to stop the recording. If you do not, it will continue to record for a certain time after the last user leaves. Lengthy recordings can take 24 hours or more to process and become visible in your Google Drive. If it does not show up after that time, ask your organization's Google admin to investigate. They will need the Meet URL.