Hi! I got email that my account blocked and I need reactivate it. I am wondering if it scam or something wrong with my account. Could you advise please? Thank you

It's a scam. DO NOT respond to it in any way - they are trying to detect your ID and password. Apple will never send out an email like this - if they do have to suspend your account for security reasons they won't tell you, they will wait for hyou to find out and contact them. You could forward the message as an email attachment to Apple at reportphishing@apple.com