You can sort of pinch the sides of the pop bumper caps and lift them off, they are held on with clips built into the plastic. For those two rollover insert lamps, the relay bank blocking them likely has two wingnuts or bolts that you can loosen and then swing the whole bank out of the way. Or just use a plunger rod rubber tip as a tool to reach them easier. The score/instruction card lights can be got at by removing the two screws at the end of the playfield that secure the card holder, then you should be able to lift it up and out and get to the lamps.