My accout is blocked because if wrong answer of security questions

See this support document: If your Apple ID is locked - Apple Support

https://support.apple.com/en-us/HT204106

If your account has been locked, you can unlock it yourself at iforgot.apple.com , if you are able to verify your identity with your password.

If you cannot verify your identity and reset the password, you need to give the account security team a call.

If your Apple ID is locked for security reasons, you might see one of these alerts:

• “This Apple ID has been disabled for security reasons”
• "You can't sign in because your account was disabled for security reasons"
• "This Apple ID has been locked for security reasons"

When you see one of these alerts, you can go to iforgot.apple.com to unlock your account with your existing password or to reset your password. After multiple unsuccessful attempts to unlock your account, your Apple ID will remain locked and you can try again the next day.

If you use two-step verification, you need to use your recovery key and a trusted device. And if you use two-factor authentication, you need a trusted device or trusted phone number to unlock your Apple ID.

If you see a message that is different from the alerts above and you can't reset your password, contact us for help. (https://getsupport.apple.com)

If that does not work, contact Apple Support at this address: Contact Apple for help with Apple ID account security - Apple Support