Q: forgot to answer to the secret questions on your account

Don't post your email address (unless you like spam emails), these are user-to-user public forums, not iTunes Support nor Apple - I've asked the hosts to remove it

If you have a verified rescue email address on your account (an additional/alternate email address is different) you can use that to reset them : If you forgot the answers to your Apple ID security questions

If you don't have a rescue email address you will have to contact Support in the country where you are (and which is therefore the country on your account) to get the questions reset - from the above link :

Get more help

If you need help resetting your security questions, contact Apple Support.

If your country isn't on that ‘contact Apple Support’ page then try this form to contact Support : https://www.apple.com/emea/support/itunes/contact.html

When they've been reset, and if you don't already have a rescue email address, you can then add one for potential future use : About your Apple ID email addresses - Apple Support

Or if it's available in your country you could change to 2-step verification : Frequently asked questions about two-step verification for Apple ID