I have deleted and reloaded creative cloud and indesign twice. Is there anyway to repair this damaged indesign document? It's 84 pages, and I hate to have to rebuild the entire thing.
If it's an InDesign document corruption try saving it as an IDML document, renaming it and try to open it again.
If it might be an InDesign corruption try resetting the InDesign preferences.
If that doesn't work uninstall InDesign using the drop-down icon in the Creative Cloud app, then run Adobe Cleaner before reinstalling InDesign.
It's important to make regular incremental back-ups of your work including copies on external devices.