From GameWatcher: “Assassin’s Creed Odyssey is out this week and it’s got a lot of greatness in it, but one of the more annoying aspects about it is the slightly intrusive HUD. However there’s good news, as Assassin’s Creed Odyssey UI elements can be turned off.”
Source: N4G PC Assassin's Creed Odyssey UI Menu: How To Customize Your HUD