where do i check my clutch fluid

There is a clutch master cylinder, not to be confused with brake master cylinder, I couldn't find a image of one on a truck

Look for a small plastic container about 1 inch in diameter located close to the back of the engine, usually near the brake fluid reservoir. It looks a lot like the brake fluid reservoir but it's smaller. Imagine that the clutch pedal went straight through into the engine compartment: this is where you'll find the clutch master cylinder and clutch reservoir. Check the fluid level. The reservoir is usually clear with a small round rubber cap on the top; it should be filled to the top. Add brake fluid if it's low.

what kind of clutch fluid do I use?

I learned that brake and clutch fluid is the same. That is, the same fluid is used as both brake fluid and clutch fluid

WHAt is the compactly

Can o add transmission fluid instead pf cluth or brake fluid to mu 2003 ford range 5speed

Absolutely not, you cannot use transmission fluid in place of brake fluid.