There is no legitimate or safe public list of serial numbers and authorization codes for SketchUp Pro 2019. Sharing or using unauthorized license keys is a violation of software licensing agreements and can expose your computer to security risks.
SketchUp Pro 2019 , serial numbers and authorization codes are unique to each individual "Classic" license purchase and are not provided in a public list. SketchUp transitioned away from these perpetual licenses in late 2020 in favor of subscription-based accounts. MasterSketchUp.com How to Find Your Official 2019 License Details There is no legitimate or safe public list