Hi,
the description from VcHostSystem.summary.quickStats says: Included in the host statistics are fairness scores. Fairness scores are represented in units with relative values, meaning they are evaluated relative to the scores of other hosts.
I would try to get this info from an VcResourceGroup: Represents a set of physical resources: a single host, a subset of a host's resources, or resources spanning multiple hosts. Resource pools can be subdivided by creating child resource pools. In order to run, a virtual machine must be associated as a child of a resource pool.
Regards,
Chris