Exeggutor: is it worth TM'ing Seed Bomb?

Missing key evidence, so I won't answer: what level Exeggutor, how many charge TMs do you currently have, what purpose do you want it for?

I would honestly do a couple more egg raids before I used my last tm. See what you get.

Eggy raids show up every day and can be solo-ed easily. And once defeated, they can be easily caught. I've got basically a 100% success rate on catching Eggys after raids.

If the Eggy you're talking about is only level 20, you're better off trying to do Eggy raids until you get a better moveset. Even if a raid gets you a BS-SoB eggy, you're better off Fast TMing that than trying to Charge TM your ES-SeBo one.

Are you using it for raids? I prefer seed bomb in favor of solar beam because I notice more that when I use my ZH/SoB beam exeggutor, I get KO'd when I am either in the animation of solar beam (requires 4.9s? ~3s into the animation it deals damage) or when I have a fair amount of energy built up. In these situations seed bomb would be more effective. Also less than half the cooldown compared to solar beam helps with dodging many charge moves

No L20 Eggy is worth a TM while he is still a L2 raid boss. If he was L27+, you might be able to make a case for it.