If you are looking at the 2019 version specifically, it was a major transition year for SketchUp, introducing features that remain relevant:
: If a project file becomes corrupt or the software breaks, you have no access to official support channels to recover your work. sketchup-pro-2019-full-version-kuyhaa
: Enhanced the connection between 3D models and 2D documentation, including "Export for SketchUp" to turn 2D shapes back into 3D faces. If you are looking at the 2019 version
: A low-cost version for iPad and web, ideal for basic 3D modeling on the move. sketchup-pro-2019-full-version-kuyhaa
: Malicious code can record your keystrokes (keyloggers) to steal banking info and passwords.