Hello Gomodan.
I understand that you are having issues with your security questions and rescue emails address. Let'g go over the options that you have available.
Because the rescue email address is incorrect, the only way to reset the security settings and to six your rescue email address is to contact Apple Support. Take a look at the information outline below for more details.
If you forgot the answers to your Apple ID security questions
https://support.apple.com/en-us/HT201485
If you couldn't send a reset email, don't have a rescue email address, or can't access email at your rescue email address, contact Apple Support. Apple may ask you to generate a temporary support PIN to verify your identity. After you reset your security questions, you might want to update your rescue email address.
If you have trouble remembering your security questions, you might want to set up two-step verification. With two-step verification, you don't need security questions to secure your account or verify your identity.
Take care