If you have lost your serial number, do not resort to piracy. Contact Vectorworks support at www.vectorworks.net/support. They have helped thousands of users recover their licenses safely.
If you already have Vectorworks installed, you can locate your active serial number within the software: Vectorworks Preferences Vectorworks Serial Number
A cracked version of Vectorworks cannot connect to the official update servers. You will be permanently stuck on a specific version (e.g., Vectorworks 2023 SP0), missing hundreds of bug fixes, stability improvements, and new features released in service packs. If you have lost your serial number, do not resort to piracy
For older, perpetual versions of the software purchased on disc, the serial number is usually printed on a sticker inside the box or on the sleeve. Managing and Updating Licenses Vectorworks 2023 SP0)