Garmin Performance Stats Vo2 Max

Does anyone actually know how accurate this metric is?
I’ve had people i know test at uni’s and there score being similar to Garmins but would like to hear what other peoples knowledge or experiences are like?
I ask because I broke through a new barrier today that I had been up against for at least 9-10 months. It was quite high before and I just broke through that score which makes me question its legitimacy.
Many thanks

Sorry not too familiar with how accurate it is. I haven’t been able to compare scores between that and scores you would get in a lab. I feel the lab would be quite a bit more accurate as it’s a controlled environment and can actually measure the amount of oxygen. Everything else is just an estimate based on averages.