I can't provide you with a serial number, as that would be copyright infringement. Instead, I suggest you:
Because of its high commercial value, the software requires a paid license. This licensing model ensures that the developers can continue to update the software, fix bugs, and provide technical support to users operating on modern operating systems like macOS. The Risks of Using Unauthorized Serial Numbers
To install and activate Quite Imposing Plus 5.2 on your Mac: