Padel match stats worth tracking

Six numbers cover almost everything useful about a padel match: the set scores, the duration, the total points won by each pair, how many tiebreaks were played, your average and peak heart rate, and the active calories. Everything past that needs video or sensors that padel apps do not have.
Set scores plus total points, together
The set scores say who won. The total points say how close it was. A 6-4, 6-4 win with 96 points to 83 was a real contest; the same score with 96 to 61 was not.
That gap is the most useful single comparison in a padel record, because it separates the matches you actually need to worry about from the ones the scoreline flatters.

Duration and tiebreaks played
Duration is the honest measure of how hard the session was. Two matches at 6-3, 6-3 can differ by half an hour, and the longer one is the one your legs remember.
Tiebreaks played is a small number with a lot of signal. A pair who reach 6-6 often are close to the level they are playing at, which is exactly when a change of partner or format is worth trying.
Heart rate and active calories
Average heart rate places the match against your other training. Peak heart rate tells you whether there were passages that really pushed you, which averages flatten out.
Active calories is the number to treat with most caution. It is an estimate from heart rate and movement, useful for comparing your own matches to each other and not much use for comparing against anybody else.
What is not worth tracking yet?
Winners, unforced errors, smash counts and court position all need either video or a coach with a clipboard. Self reported versions of them are guesses, and a record full of guesses is worse than a short honest one.
The one addition that pays for itself is the format the match was played under. A 10-8 super tiebreak and a 10-8 set look identical in a list and describe different matches, so record which rules were in force.

Questions people also ask
Is total points won a better measure than the set score?
It is a better measure of how close the match was, not of who won. Read them together: the set score is the result, the point total is the margin.
How accurate are calories from a padel match?
It is an estimate built from heart rate and movement, so treat it as a way to compare your own matches rather than an exact figure.