To get a license key, you must purchase it through the official developer site, Evil Software Empire . The license currently costs $40 as a one-time purchase. How to Get and Activate Your License Key
Here is a post tailored for a design blog, forum, or social media group: sketchup subd license key top
If you cannot afford the $69+ price tag for SubD, there are legitimate "top-tier" workflows to get similar functionality without breaking the law. SUbD for SketchUp To get a license key,
: Subdivides mesh faces to smooth out sharp edges. and update-enabled version. Avoid "Free" Keys:
to ensure you have a working, legal, and update-enabled version. Avoid "Free" Keys: