There are a lot of things we can measure with training. Reps, sets, time, distance, heart rate, steps, pants, weight, waist, consistency (my favorite) and more. The list can be as long as you want it to be.
The people with a data orientated mind like to track every possible trackable metric. It’s what keeps them engaged. For someone else, too much tracking becomes overwhelming. And a just another reason to not turn up.
Measure whatever keeps you accountable. Whatever keeps you showing up. Whatever suits your personality.
Regardless of whether you track everything or none of it, it comes down to this. Are you getting better (stronger, pain free, fitter, more energetic and so on) at the things that you care about and the activities you love doing?
In the end, that’s all that matters.