First, make sure that the email comes from Apple: Identify legitimate emails from the App Store or iTunes Store - Apple Support
Apple email related to your Apple ID account always comes from appleid@id.apple.com. If you receive suspicious email, learn how to identify fraudulent email.
Not likely an issue, but it pays to be sure. How did you create your Apple ID? See this article for details on the proper steps and make sure that you followed them: Create and start using an Apple ID - Apple Support