Think of scoring in two ways: perimeter and interior.
For perimeter scoring (which you mostly get from guards) most important skills are: per, spd, bh (not necessarily in that order)
For interior scoring (which is mostly forwards / centers but can also come from guards), most important skills are: lp, ath, bh (not necessarily in that order)
The trick is to get a mix of perimeter and interior scorers who can also play defense.