I dont think the Sentinel team have agreed to support ARG queries in Incidents yet.
You could try something like this. Note, most SecurityResource results dont contain a date, so you may not be able to do this for the data you require.
The use of arg(""). allows you to run an ARG query in a Logs blade.
arg("").securityresources
| where type =~ "microsoft.security/assessments"
| extend statusChangeDate_ = properties.status.statusChangeDate,
displayName_ = properties.displayName
| where statusChangeDate_ > ago(3d)