The Q-4 Borer Droid is written

"Skills (group only): Perception, Ranged (Light)"

There is no value next to it

My guess is that the droid only have these skills within a group of the same droid...

How many is a group.... 2 droid?

And how many skills do they get.... 1 each ....? Perception 1? I'd guess

It's for minion groups. Each minion beyond the first grants 1 rank to each of those skills (maximum of 5 ranks).

My bad, didn't saw it was a minion.....gatherer de droids stats and so far, all I had was Rival....