96 Honda Prelude S 2.2 my speedometer RPM gauge stopped working my turn signals stopped working and my fuel and temperature gauge and all the lights are dim how do I fix this or what is the problem

More than likely a broken wire, corroded connector or a chafed wire.

For strangeness like that you need a good local auto electrician with a pro grade scan tool computer. It sounds like a BCM (body control module) communication issue.

https://www.google.com/search?q=auto+electrician+near+me

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Replace the fuel sending unit

If the miles turn fine and the speed arm doesnt move you have a problem with the tachometer this is refeered to as RPM,This get is signal directly at the ignition negaive part if the coil, If the connection at the coil is in good order a RPM gauge or Tachometer will be your solution

I'd wager that the fuse that controls the gauges is shot, or one of the internal connectors got unplugged (Fuse sounds more likely). Radio, Lights, and Turn Lamps are usually on seperate circuits.

If the battery light is coming on,with the engine running,then have the alternator checked,it may not be charging.

Since you just bought the car, I thought that you might not be aware of the instrument lighting control. I apologize if you know this:
The dial on the dashboard to the left of the instrument panel controls the brightness of the instrument panel lights. Turn the dial to adjust the brightness.
To reduce glare at night, the fuel and temperature gauges dim when you turn on the parking lights or headlights. You then adjust their brightness when you adjust the instrument panel brightness. Turn the dial up as far as it will go to return the fuel and temperature gauges to their daytime brightness.
Hope it's that simple.

You probably checked this, but sometimes we forget.
The dial on the dashboard to the left of the instrument panel controls the brightness of the instrument panel lights. Turn the dial to adjust the brightness. Also, to reduce glare at night, the fuel and temperature gauges dim when you turn on the parking lights or headlights. You then adjust their brightness when you adjust the instrument panel brightness.
Turn the dial up as far as it will go to return the fuel and temperature gauges to their daytime brightness.
I hope helps and it's that simple for you.

replace temperature gauge and insprct/replace speedometer/rpm cable

Just fixed this myself. I found a used USDM meter/gauge out of a 1995 SI on EBAY for $200. However, I have a VTEC engine that redlines at 7500 RPM and the SI's redlines at 6500 RPM. Easy to fix by swapping the face plates inside of the meter/gauge. If your issue is the bulbs they cost a lot... around $250 each. But if your lights went out simultaneously then the bulbs are not the issue... it's the power supply where the bulbs plug into and that's located behind the drivers dash speaker (very easy to remove with only two screws holding it in). This part is more expensive at around $350, but cheaper than buying two bulbs. Scroll through every page of honda prelude listings on EBAY and you may just get lucky like I did. Hope this helps.