A little hint for ya. Using a thread title "help" or "HELP HELP" or EMERGENCY NEED HELP is not the way to ingratiate yourself. Think a bit. What is your question about? Brakes? Fine. How 'about "need help with brakes" How 'bout "broke brake bleeder"
Frankly it might be about as cheap to just buy a new cylinder as try and fix it. Some of the parts stores do have bleeder repair devices, but they generally require drilling and tapping and so on. Only other advice is get the cylinder out where you can deal with it, and see if you can extract it from there
