The most recent release of InDesign (version 18.4) is now available for download via the Creative Cloud Desktop application. By updating to this version, you will have access to a new feature that allows you to Search for text within published documents. For more information about this exciting addition, please refer to the article: Learn about new features and enhancements in Adobe InDesign 18.4.
Note:- This is a phase-wise rollout, and updates will be available to users of different countries in the coming days. Check your notifications in the Creative Cloud Desktop application, or refresh the application to check for updates.