I suggest reading about system 6 in Pinwiki first, followed by checking fuses and voltages.

It doesn’t look like you have high voltage ( no glow in any of the displays) and there’s something weird above the transformer. I think it’s a capacitor but can’t tell from the pic while looking on my phone.

Not a display issue - your game isn't booting. If it doesn't boot, the score display won't come on. Start at the power supply and fuses and go from there. Read pinwiki.

Did you just pick that up on fb marketplace?

Reading your post tells me you have zero knowledge of pinball and more importantly, no electronics knowledge AT ALL!

I'm not knocking you for that, just observing and my observation tells me you need to employ a technician to diagnose and repair the machine because if you attempt anything more than changing fuses (with the EXACT correct type) you are likely to cause WAY more damage than you fix.