How can I get the free Sir Beurre Back Bling?

To receive the Sir Beurre Back Bling, you need to sign up for email surveys and the content will be granted within 24 hours.
Refer to this page for more details on How do I enroll to receive email surveys to provide Epic Games feedback?

Note: If you signed up for surveys over 24 hours ago, and you're still missing the Back Bling, please verify that you signed up on the right account.