To obtain Facebook Pixel credentials, follow these steps:

1. Create a Facebook Business Account: If you don't have one, sign up at Facebook Business.

2. Access Facebook Ads Manager: Log in and navigate to the Ads Manager.

3. Set Up Pixel: Go to the 'Pixels' section under 'Events Manager'. Click 'Create a Pixel'.

4. Name Your Pixel: Enter a name for your pixel and your website URL.

5. Retrieve the Pixel ID: After creating the pixel, you'll be given a Pixel ID. This is your Facebook Pixel credential.