How do I cancel the rescue email of my account?

you really shouldnt when i made my account i did not need one but now i need one in order to change my security questins i forgot but i dont have one so i cant.now since i cant change the questions because i dont have a rescue email i cant make any purchases and i am stuck with figuring out how to add a rescue email to an existing account

Call applecare support (1800myapple), tell them you need to reset your security questions. They verify your identity, send an email so you can reset your questions. Then you can Add the Rescue email.