if you manually reset the gold bonus unit, the outhole relay should power.

if the spinner isn't working either, the score more index D switch is a likely culprit since it affects both things ... I think. Hard to tell where the spinning target switch is on the schematic. I assume it's in the 100 pt relay circuit (schem D24 area)

best check is to use a voltmeter checking for 24VAC One probe on the R-Y-W wire on the outhole relay coil (assuming the flippers work), other probe along the circuit AR highlighted in post #4. Especially the R-G wire in IND-D.

continuity testing is not reliable ... depends how you are doing it. The key thing is it only works if the circuit is isolated - no roundabout paths thru coils and the transformer - and it will only reliably diagnose a circuit open. Even if a circuit shows continuity - or better, a resistance measurement below a couple ohms - the circuit may not work when a large current needs to flow thru it.