Hi Whahaar,
Thank you for reaching out to us here.
As per the regular process, the verification email with a security code is sent only when there is an attempt to Sign in using the same email address. Since you have mentioned that you did not request a security code and the message states to contact Adobe Support immediately, I would request you to Click on https://helpx.adobe.com/contact.html to contact Adobe staff to help. Be sure to remain signed in with your Adobe ID before accessing the link.
Thank you.