HOW DO I GET CLOSED BETA

@GeneralGiblets5
"If you pre-ordered the game through the Xbox or Windows Store, the game will appear in your games library 24 hours before the Closed Beta begins. You will need to download and install it.

If you have pre-ordered a physical version of the game through a retailer, you will need to redeem the code for the Black Dog cosmetic pack. Once you have done this, the game will appear in your games library 24 hours before the Closed Beta begins. You will need to download and install the game."

Take a look at this FAQ:
https://www.seaofthieves.com/news/closed-beta