Should I TM a Machamp?

I have the same Machamp 93.3%. I will TM him for sure, just need the TMs "Kappa".

Only if you have enough candies to level it to 30 and don't have another 50+ IV Machop you can evolve.

Considering its IV being good I assume?

You can guarantee double Fighting move with 2 TM uses.

Now...obviously hope to get DP for the ideal outcome. But if you get couter, its still a definite solid result with minimum TM usage. And very much usable for all your fighting needs.

When i finally evolve my 96% Machop, im definitely gonna spend some TMs if i gotta, to get the right moveset.

Bullet Punch, Legacy charge move, and level 20? Considering you need to use both fast and charge TMs, I would only do that if it was 96+%. So at only 84%, no.

If it had Karate Chop, that might be more worth a charge TM attempt, because Karate Chop is a good fast move.

Fight Machamp raids to look for one with better IVs and/or moveset. Machamp can be done with two players fairly easily.