Valid SketchUp Pro 2018 serial numbers and authorization codes are unique to each user and are not distributed as a public list. SketchUp Pro 2018 used a "Classic License" system, which Trimble officially discontinued in November 2020 in favor of subscription-based plans. How to Find Your 2018 License Details
to retrieve your code. You will need the email address associated with your original purchase. Check Your Trimble Account : For many users, licenses are now managed via a Trimble ID . Sign in at account.trimble.com Sketchup Pro 2018 Serial Number And Authorization Code List
Chapter 4: The Right Choice
Additional Resources
Benefits of Using Sketchup Pro 2018
Chapter 3: The Mentor’s Advice