Report icon missing in side menu of grafana enterprise 8.4.3.0.
Welcome to the 
community @faisalchemmanatt1!
It sounds like you have the enterprise version of grafana and are aware that reporting is an Enterprise licensed feature. In licensing does it look like the license is valid?
If you have access control enabled, you might also verify if it is missing for all users or if the admin user is able to see it.
If you have an enterprise license, you can also open a support ticket to investigate with one of our support engineers.