The Portfolio Score is an item of the executive report that is based off of four subcategories:
Latest Patch Score
Checks the number of available system updates for the device:
IF 0 = 100%,
IF 1-2 = 75%,
IF 3-5 = 50%,
IF more than 5 = 25%
The available updates can be seen System Updates under a given policy:
This is based off the the OS version on the device versus the latest OS version available from Apple.
If <= 10.14 then 100%
If 10.13 then 75%
If 10.12 then 50%
If 10.11 then 25%
This is based off of the used disk space on the devices.
If <=80% disk spaced used then 100%
If 85% disk space used then 75%
If 90% disk space used then 50%
If 95% disk space used then 25%
Based off of how many Alerts are triggered.
If 0 alarms are currently triggered then 100%
If 4 alarms are currently triggered then 75%
If 10 alarms are currently triggered then 50%
if 20 alarms are currently triggered then 25%
Everything has a 1:1 weight.