Sculpt is not designed as a 'one-click' solution to fix an entire imported scene in one go. Use Sculpt by working through an imported 3D model in manageable groups or sections.
Sculpt diagnostic tools will assist users in identifying many types of issues and provides follow-up tools to fix these.
Please note. The retopologizing tools will not rebuild an entire detailed Revit model. The retopology massing tool is designed to fix typical block architectural massing 3d models exported from CAD and BIM that contain stacked, triangulated and damaged geometry. It rebuilds these as clean geometry.
Use the rotopologize plane tool to recreate a new quad-mesh from messy overlapping faces.