Not all activities types are showing in VO2 max and Exercise Load on Training Status screen

VO2Max is only calculated for running with GPS, and cycling with a power meter. Swimming has never calculated a VO2Max. This is by design.

Please have a look at the section "How Is VO2 Max Calculated on My Garmin Device?"

https://support.garmin.com/en-US/?faq=lWqSVlq3w76z5WoihLy5f8&productID=552982&searchQuery=VO2%20Max&tab=topics

That makes sense but why would I not see all my activities in the Exercise Load graph?  I only see swimming.  I did a big ride yesterday that would have a major affect on my load yet it's not there.  EDIT:  I use a power meter on my bike, which I understand is required to be included in the training load calculations.

Is your Fenix 6 the Preferred Activity Tracker? Do you have Physio True Up enabled?

It is for swimming and running but not for cycling.  I track all my cycling through my 520.

When you look at the Training Load on Connect Mobile you get the option of what device’s Load is being displayed. If you’re looking for a single total load view you’ll need to activate Physio Trueup on all devices and make Fenix 6 the preferred activity tracker

I do have that turned on in my Fenix 6 settings but My 520 doesn’t support Physio Trueup unfortunately so I guess that leaves me using TrainingPeaks for all my consolidated data.  Thank you for all your help!

The 520 is an earlier model, and doesn't support Training Load.

I'd suggest recording your rides on your watch to get integrated TL. You can still use the 520 (easier to see the larger screen - just discard rather than save at the end of the ride to avoid duplicates).

Great advice!  I’ll do just that. 

No problems. I just read the Garmin  support article again and realised it doesn’t transfer load and only steps, intensity etc. 

I can see you got good advice about recording on 6 & 520 so good luck.