Phillip head screws should be holding pickups in place as well as back covers, truss rod cover, jack. These will likely be different sizes and you dont want too small a screwdriver head for the screw itself or you risk slippage and damaging them. Tuners probably have a phillips screw holding them from turning ( back of headset).

A small adjustable wrench is all that's required to remove the nuts securing the tuners and switch. But then your switch might have a knurled nut like this one. Pliers will do the job.

Volume, tone knobs can be carefully pryed with your fingers.