The composite crown won't bend to fill the gap.
My suggestion would be to sand/clean the paint off the metal part where the
ding is and fill the dent up with Bondo to match the crown profile.
Sand and paint much like you would for a dent on a car body....
And hope the Bondo doesn't crack/separate from the composite material.
Or plan B,just get another head!
Tape a dime to it and throw in in the trash. That way you're out something...
Seriously, I doubt whatever you do would last for any length of time...
Need a five wood head? Lol
What Darpar said. Plus it will always look like a repair. If performance is already compromised a cosmetic repair may not do anything. I don't know how TM is but maybe send them a pic of it and they will be embarrassed enough to send you a replacement. Maybe in your introduction mention that you work at a PGA course. 
Leave it alone. Itās dentedā¦ filling it will look like crap.. Pull the shaft and toss the head in the trash . What shaft is it? Atmos Red?
TM wonāt do anything, the club is old and a dent like that on top of the crownā¦ not exactly ānormalā. You can tryā¦ all they can say is no.
Playability isn't compromised, at all.
Numbers?
Paul, (anyone) got a SD Max Draw 3wood head ?
Fill it with bondo, sand it smooth and paint the entire head one color?
LBlack14 the glues are pretty strong, the bond breaks super easily with denatured Alcohol. I have a tool, Iād offer to have you send it to me and I could try it, but itās probably more expensive to ship than getting the tool . If you want to, Iāll give it a run.
I see a lot of suggestions to add bondo, considering how much is altered by a gram of weight, I donāt know if thatās honestly great advice. Itās going to be a couple grams high and toe-ish, may jack up your results a bit.
It might be too heavy, but maybe some of that vinyl wrap they use on automotive parts? They have the carbon fiber look stuff. Some of that stuff is pretty thick though.
