I received an email that my icloud account is locked

Apple will never use an email message to inform a customer that their account is locked.

Please refer to Identify legitimate emails from the App Store or iTunes Store which states "Scammers often try to trick you into sharing personal or financial information by sending you messages or links to websites that might look like they’re from Apple, but their actual purpose is to steal your account information. Some phishing emails will ask you to click on a link to update your account information. Others might look like a receipt for a purchase in the App Store, iTunes Store, iBooks Store or for Apple Music, that you’re certain you didn’t make."

"Never enter your account information on websites linked from these messages, and never download or open attachments included within them."

Apple will never send a message like this. That's how you know that the message that you saw was a scam that was trying to trick you into revealing personal information and passwords.

Never click a link in a message like this.

Nothing was locked because no one has access to your account.

This is a scam!!

If you receive a suspicious email or SMS text message that looks like it's supposed to be from Apple, please email it to reportphishing@apple.com. 

▷ Recognize and avoid phishing messages, phony support calls, and other scams.