I recommend you use only genuine Honda Brake Fluid DOT3 but you can use another brand as long as it is DOT3.
Brake fluid type is Dot 3. It should also say on the reservoir cap.
To put brakes pads on a 1994 Honda Civic, you will need Bleed brake fluid.
DOT 3 brake fluid
Brake Fluid Dot 3 Note: Brake and Clutch fluid are the same
DOT3
A 1997 Honda Civic uses DOT3 type brake fluid. This is the standard for power brakes in most cars for the last 20 years.
Check your brake fluid level!
Per Honda Civic manual, at every 3 years independent of mileage !
DOT 3 OR 4
It should be located under the hood, on the firewall, drivers side, near the brake fluid reseroir.
If you mean where to add brake fluid, it would be in the brake master cylinder, usually located on the driver's side, near the firewall. You should be able to see a round plastic reservoir with a gray cap ... unscrew to add brake fluid.
The brake fluid level may need to be topped off. Otherwise if the light is still on after checking the fluid, the ABS system should be checked by a professional. Be sure to use the type of brake fluid recommended on the brake fluid cap.