We have a number of Secure Score action items that are mitigated by third party systems. "Turn on Real-time protection" for example is one that we have a mitigating control for. We are marking those as excluded in Defender, but Microsoft Security Center still has that listed as an action item in Secure Score.
We want the exclusions that we make in Defender to be reflected in Secure Score. We shouldn't have a lower score because those two systems aren't syncing.