Do NPC's or PC's get a malice for being engaged with multiple target? and if so what page is the rule on

Boost dice

so if 2 PC's are fighting 1 npc the PC's get a boost dice? Do you have a page number for that?

There really isn't a hard-set rule on being engaged with multiple opponents. Now if you were prone, all opponents attacking with melee combat checks (that is, Brawl, Melee or Lightsaber weapons), they would benefit from a boost die.

To be clear, the never even really defined how many maneuvers it takes to engage or disengage from a grouping of enemies until it was brought up with a question in Genesys (the answer is 1 maneuver, always, unless the GM says otherwise).

In fringe cases, such as specific minion NPCs, there are "pack hunter" creatures that benefit from boost dice when attacking while engaged with others of their kind.

Usually being engaged with two people is it's own adv/disadvantage, twice as many attacks, miliple targets,who can use advantages to push their attack.

Its at least a boost die.

There is one talent - in the LS makashi style - where you can get a boost if you fight a single opponent in the lightsaber , and there is one in Shi-chi that gives a bonus to attack when fighting multiple opponents.