If you are looking for a SketchUp Pro 2017 license key, it is important to know that Trimble (the developer of SketchUp) has transitioned to a subscription-based model and no longer sells or supports "classic" perpetual licenses for older versions like 2017. Why You Can't Find a "Link"
Find the official download link for the installer (if you already own a key). sketchup pro 2017 license key link
Before SketchUp Pro 2017, there was SketchUp Make 2017—a free, non-commercial version. Trimble no longer hosts it on their main site, but archived copies exist on trusted sites like FileHippo (verify file signatures). This version is identical to Pro except for the license type (personal use only).
Caution: Only download from known repositories. And remember, Make 2017 cannot be used commercially. If you are looking for a SketchUp Pro
Support and Updates: Purchasing through official channels ensures you receive support and updates, which are crucial for productivity and security. Trimble no longer hosts it on their main