If you already have a valid, previously activated copy of SketchUp Pro 2017 on a machine, it will continue to run. However:
: Trimble officially stopped selling new Classic Licenses and renewals on November 4, 2020 Existing Licenses license sketchup 2017
SketchUp 2017 was designed for older versions of Windows and macOS. It often crashes on modern systems like Windows 11 or macOS Sonoma due to changes in graphics drivers and security protocols. If you already have a valid, previously activated