VMware vCenter 6.7 was typically licensed on a per-instance basis and offered in three primary editions tailored to different business sizes:
: The "top" edition intended for large-scale deployments. It supports an unlimited number of ESXi hosts and includes advanced features like vCenter Server High Availability (VCHA) and Enhanced Linked Mode. vmware vcenter 67 license key top
If you have already purchased a license, you can retrieve or manage your keys through several official channels: How To License vCenter 6.7 VMware vCenter 6