Looking for a way to flag when System Queue Monitor Messages reach a limit with a Business Event

I have tried to use a GI to pull up data that is referenced inside the DispatchersStatus object, however an error shows Invalid object name 'DispatchersStatus'.  Although I am addressing the root cause behind the processing issue from a business event, it is my understanding that the number of messages in the push Notification Queue and Business Event Queue are symptoms of an issue with BEs.  Has someone found a way to pull in the latest number of messages to kickoff an email SMS or other subscriber?   I am currently using Build 19.209.0038 but plan to upgrade to 2020 R2 this month.