Hi W841454770,
Welcome to the forum. As mentioned, the game hasn't been released yet. What you have done is pre-ordered the game.
This means that you have reserved the game so that on the 27th February 2018 it will be with you or unlock (if you got a digital version) and be able to play just as if you bought the game normally.
Pre-ordering can come with several advantages, which can depend on where you have bought it from. Some will allow you to download the game a few days before the launch date, allowing you to literally play the game as soon as it unlocks. Some come with content (Perhaps in-game clothing, weapons that are exclusive just for pre-orders or to the specific place you buy it from) and so on.
If you have any other questions, feel free to ask or take a look at our Support pages