Before you can start using Best Buy APIs, you need an API key. Visit GET API Key and sign up with your email address (free/edu email providers may not be accepted). Best Buy will send you an email with instructions on how to activate your new key.
The number under your account name is your Impact Partner ID:
Notify Best Buy of your Impact Partner ID
Submit the contact form with the following information from your application to complete the registration process.
Your Impact Partner ID