In the system properties card on the host detail page there is a field BIOS UUID. If this really was the BIOS UUID I'd expect it to be on the BIOS card instead.

However, the UUID field doesn't come from the BIOS. For managed hosts it's the UUID in the compute resource (if any). It doesn't exist for unmanaged hosts.

I'd suggest to not show it at all and treat it as a system internal property. Instead, show the VM as is done in #35649.