How to get Hitman3 through Collector‘s Edition

Hi everyone. I‘ve spent a lot of time reading and I wouldnt be surprised if I missed it, but how do I get Hitman 3? I‘ve bought the collector‘s edition in 2016 and I got Hitman 2 for free but can‘t remember how. I can‘t find a way to get Hitman 3? Do I have to search for my codes at home and type them into xbox store?

You have to buy Hitman 3.
Hitman 2 was never free either, only the first mission was free (New Zealand).