Sketchup Pro: 2021 License

: If you already owned a Classic license for an older version, you might have been eligible to upgrade to 2021 before the cutoff. However, new 2021 licenses are primarily handled via Trimble ID (TID) subscriptions. Symetri.us 2. Modern Subscription Licensing

Yes. It is a requirement if you are using it for your work. That would be commercial use and that requires an appropriate license. SketchUp Community Questions about user license - SketchUp Forum Sketchup Pro 2021 License