The coolant reservoir on a 1995 Camaro is typically located in the engine bay, often near the radiator. It's a plastic tank with markings indicating minimum and maximum fill levels.
However, the exact location might vary slightly depending on the engine (V6 or V8).
To be certain, consult your 1995 Camaro's owner's manual. This will give you a diagram and precise location. Failing that, a quick online search for "1995 Camaro coolant reservoir location [V6 or V8]" with images should show you what to look for.