Just Dance 2019 - Nintendo Switch Standard Edition - Amazon.com
Official versions of were never released for the PC. The game was primarily developed for consoles like the Nintendo Switch, PlayStation 4, Xbox One, and even legacy systems like the Wii and Xbox 360. Just Dance 2019 Game Download For PC Full Version
If you specifically want the 2019 version and own a console, you can still find physical and digital copies: Just Dance 2019 - Nintendo Switch Standard Edition - Amazon