It\s a bit of a challenge right now as you need to know the bomb weapon. I have some plans to increase usability of the module, but it's not implemented yet.

Let me know which plane and napalm bombs you want to use and I will create the module setup for you here. Might take a while though.

I think it was A6 intruder with Mk83 750lb Napalm (3x)

And is it possible to make it a support i can call in?

The weapon/bomb launcher to use is Uns_NapalmLauncher_750_dl. As plane class you could either use uns_A6_Intruder_BMB or uns_A6_Intruder_CAS.
There is no possibility to call in carpet bombing from the combat support radio or other means. It's setup in Mission and starts with Mission start. Not sure if I can change it to mid-game support.

Where can i find the classnames and weapons for the planes?

Best in the config viewer. But with Unsung 3.1 Golf you can setup the carpet bombing via Eden Tool easier.

How about you tell us what BMB LGB MR SEAD HBMB and all those abbreviations stand for ♥♥♥♥♥♥♥ ♥♥♥♥♥♥♥ how hard is it to ♥♥♥♥♥♥♥ make a guide or something explaining them I’m not about to try each bomb right now

BMB - bomb
LGB - Laser guided bomb
MR - multirole
SEAD - supression of enemy air defense
HBMB - Heavy bomb

I'd presume if you play Arma you'd know basic abbreviations, but at least now you'll know

When I tried to use the carpet bomb module it said “Unsung pathfinder needed” is that a mod I need?

No, it's a plane that flies in front of the bombers and defines the waypoints the strike takes later. Been years since this has been coded, so not certain on the details.