clutch is engaged and my pedal has no pressure exept the spring

The piece that fell out is probably the pin that holds the clutch push rod to the pedal. There is a clevis pin clip that would have had to come off in order for it to have come out.
I am attaching a diagram of the clutch system so you can see the parts I am talking about.

no sir the clevis pin is in it still that rod is still getting pushed in and out of it im thinkin that rivet was jus in the car already i no its somethin simple jus not sure what exactly to fix on it it doesnt return when i push it down but it will stay if i pull it up almost like a spring or what ever keeps pressure to it came undone if you could help i surely would appreciate it

Do you still have fluid in the system, is there any sign of fluid leaking from the rear of the master cylinder?

yes sir there is a lil leak but the fluid is still full butt it has no pressuure in the clutch and the clutch is stuck
engaged

yes it does have a lil leak but the fluid is still full and i cant drive my car cuz the clutch is engaged and wont let any power get to the car

o and its a 91

I would say it is a mechanical failure in the clutch assembly and the box will have to be removed to inspect further.