@Bhanu3377 Have you tried ViewAccountGroups or ViewGroups SPRights? With these rights user can search entitlement through advanced analytics and can see the entitlement details with save option greyed out so modification is not possible.
there is no dedicated OOTB SPRight that provides strictly read-only access limited to the Entitlements page UI.
As @SivaprakashRNTBCI mentioned, you can leverage existing SPRights like ViewAccountGroups or ViewGroups. These allow users to search and view entitlement details (for example via Advanced Analytics), and the UI automatically restricts modification actions (Save/Edit options will be disabled)