Trimble provides an Online License Manager where you can enter the email address used for the purchase to have your credentials resent to you. How to Authorize SketchUp Pro 2019
Once you have your credentials, follow these steps to activate the software: Licence and authorization code - SketchUp Forums Sketchup Pro 2019 License Key And Authorization Number
You can find these details by logging into the Trimble Account Management Portal using the email address associated with your purchase. Trimble provides an Online License Manager where you