Hi All, Is there any way i can hide the field on Role View page using UserEvent/Client Script. I cannot find the record type role while applying script to the Role.

Unfortunately, that is not a supported page. What field are you looking to hide?

is sales role one more thing why i can't run search or lookupcolumns on roles

You can create saved-searches on the Roles record. I am not sure what you mean by "lookupcolumns" (search.lookupFields method maybe?).