Regarding the 500 point star rollovers, when one of 500 point star rollover switches is closed, power is sent to the 500 point relay coil via a normally closed switch on the 3000 point relay.

I would first manually push in the 500 point relay to see if it scores 500 points. If it does, then you know the problem is between the rollover switch and the relay coil. Then you would want to check the 3000 point relay switch with the green wire and white/red wire. Make sure the switch is clean and adjusted properly. Do the bottom rollovers or targets have the same problem when attempting to score 500 points? Other issues could be a bad playfield Jones plug connection or dirty/worn playfield switches.

Another area to look at is the circuit that controls the 3000 point relay coil. A switch in that circuit might be misadjusted, which would cause the 3000 point relay coil to be energized when the 500 point relay coil was being energized. Check the 3000 point relay switch with the blue/orange wire and brown/white wire. Check to make sure the switch is clean and adjusted properly, and that it's not shorting at the switch stack...

It seems like power to the 100 point relay coil is being interrupted during the 500 point scoring. When a switch on the 500 point relay closes it starts the score motor and a switch on the score motor sends power through a switch on the 500 point relay and power goes to the 100 point relay. This, in turn, sends power to the 100 point score reel solenoid.

To confirm, the bottom inner return lane rollovers also have the same issue - the 500 point rollovers only score 100 points?

Check these two switches:

500 point relay switch - gray wire and green/red wire
Score motor switch 2F - green/red wire and yellow wire

Look closely at these switches. Make sure none of the wires and wire lugs are shorting. Check if switch 2F is clean and adjusted correctly...