Where do i get activation key or cd key?

[Tony]

I just bought the game on steam and now it is taking me to uplay, there it appears a task saying put your activations key for your games, it's like AAAA-BBBB-CCCC. Where should i get that code?

[f_dog80]

Click on the game in the steam library. On the right there is a view CD key button,
or right click on it in the library list and click on view CD key