There is no quick indicator. Upvote my suggestion if you dig it! https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager-ideas/unpublished-changes-indicator/idi-p/447046#M648

Request for Feature Enhancement (RFE) Summary:A quick indicator that a page has unpublished changes (e.g., something like a blue dot that indicates an unread message)Use-case:Large websites that get change requests from different avenues. Sometimes they overlap, creating issues when other changes ge...