Look for an email from sketchupmail@sketchup.com . The subject line typically includes "SketchUp License Information."
SketchUp 2020 was the last version to support "Classic" (perpetual) licenses before the software moved to a subscription-only model in November 2020. How to Find Your License Details Search your Email: Sketchup 2020 License Key And Authorization Number
Go to the official SketchUp website ( https://www.sketchup.com/ ) and navigate to the "Plans" or "Pricing" section. Choose the plan that suits your needs (Web, Pro, or Studio). Look for an email from sketchupmail@sketchup
For hobbyists and makers, is a web + iPad version at a fraction of the Pro cost. It offers 95% of the modeling capabilities of desktop Pro. or Studio). For hobbyists and makers