Mike_Glez I do think this badge is for Microsoft internals at the moment. The earning conditions are listed as the following 

Earning Criteria

• Attend the M365 Copilot Solution Play Starter Track or consume the content on demand.
• Attend the M365 Copilot Rockstar Track or consume the content on demand.
• Attend the “Practice makes perfect” M365 Copilot Days or consume the content on demand.

https://www.credly.com/org/microsoft-modern-work-enablement/badge/copilot-for-m365-achiever-badge-fundamental

And none of these courses seem to be available to the public yet