My lock Apple ID balance can’t be used?

You will need access to your account in order to use any Apple ID balance. See if the message you received is one of these:

If your Apple ID is locked or disabled - Apple Support

Use the appropriate solution based on the disabled message that matches that support article. If disabled for security reasons, then use the link to change your password. If showing disabled in the App Store and iTunes, then use the link to contact Apple directly.