Fusion 12 is stable on Intel Macs running macOS 10.15 Catalina or macOS 11 Big Sur.
As of November 2024, Broadcom made both and Workstation Pro available for free for everyone , including commercial, educational, and personal users.
While you might still search for a "key for VMware Fusion 12," Broadcom has discontinued the ability to generate new personal use keys for older versions like 12. Key Features of VMware Fusion 12
If you're looking for a VMware Fusion 12 key, ensure you're purchasing from an authorized reseller or VMware's official website to avoid any potential issues with counterfeit or invalid licenses.