You can use the GetResourceSet() method in Security.User class to find the resources and privilege of a user. 

https://docs.intersystems.com/irisforhealthlatest/csp/documatic/%25CSP.D...

The Security.SQLPrivileges class provides a Class Query DirectPrivileges that can output the SQL privileges a user has on classes.

https://docs.intersystems.com/irisforhealthlatest/csp/documatic/%25CSP.D...

Please open up a WRC case if the methods above do not apply to your specific use case.