Q: why is the rescue email button not working

Hi jaquiline.suganda,

Welcome to the Apple Support Communities! I'm sorry to hear you are having these issues with your Apple ID configuration. If you are having issues setting up the Rescue Email address, you may want to double-check the process outlined in the following article, including the links for what to do if you don't receive the verification email:

About your Apple ID email addresses - Apple Support

Regards