now i maxed the important 3 skils and added 6 sp to shield mastery but no def i got from it so what skills i should max too i donot know armor crash looks useless too i will have like 45 sp useless what do u advise me to use
I'm assuming the 3 you maxed are Combo, Panic, and Coma? You can max Shout, the stun is sometimes useful. Or you could go back to 2nd job and get axe mastery and booster, just for fun. Shield Mastery, Armor Crash, and Improving MP Recovery are useless.
Once you maxed Combo Attack, you can put it anywhere that isn't Final Attack. Coma and Panic aren't very useful either because you do more damage if you keep full Combo Attack instead of using all the orbs for Coma/Panic while training.