Turn my car on and no spedometer

You have to pull the guage cluster out and check to see if the speedo cable is hooked up if it is and still doesnt work you should disconnect it from the back of the guage cluster and check to see if the tips are messed up some older cars that happens on the tip of the cable there will be a little square that fits into the cluster you will know what i mean when you pull it apart just make sure the corners are not rounded on it that should sum up your problem if they are you need a new cable if they are not reinstal the cable and make sure its tight and go for a ride and see if it works if everything is good it should work no problem