VO2 max not showing any data

I was hoping someone could help. I ride pretty much everyday with just shy of an hour commute and then most weekends for a minimum of 1h. I’ve been using an edge 1000 for around 5years and my garmin and garmin connect show my VO2max at 67 however there is no data on the graphs. (I use a heart rate monitor every time I ride) 

I would really appreciate some help getting this data to be specific. Thanks