Microsoft Defender Antivirus Report Does Not Seem to be Correct.

I am somewhat new to the Defender Security world. So, when I went to look at a report in Intune > Reports > Microsoft Defender Antivirus, the first page was a summary, that did not appear correct.  It showed that of my 48 devices, they are all "Clean"; however, I just pushed a full scan on 7 devices last night 4 completed and 3 are still pending.  Why would those devices not show...or am I missing something.  When I go to the report tab and hit generate, I get no data.  is it really possible that there is no data?  Seems unlikely as I get incident alerts that make me think otherwise.