Vo2 Max not recording in Apple Watch Ultra 2
Vo2 max not recording just bought ultra 2 apple watch
[Re-Titled by Moderator]
Apple Watch Ultra 2, watchOS 11
Did you start a Walking Outdoor or Running Outdoor workout, using the default Apple Workout App on your watch?
And, it will take more than one workout, until a VO2max can be estimated by the Health App:
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It can take at least 24 hours of wearing your Apple Watch, followed by several Outdoor Walk, Outdoor Run, or Hiking workouts* and passive measurements with your Apple Watch before you receive an initial estimate.
If the Health app detects that your previous cardio fitness estimates could be more accurate, you'll have the option to update your data. In Cardio Fitness, tap Update under Update Your Data. After you update, the Cardio Fitness Data Updated notification shows you the results of the update and how your estimates changed.
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copied from: Track your cardio fitness levels - Apple Support