This is another specialty wooden dart board. I hope that the instructions for gameplay are included with the board.
The target areas are the different pins in a bowling set-up. The only things I can think of are to get awarded for the number of pins by the number in the target where your dart lands (which looks to be a game that loses it’s fun pretty quickly).
Or, you can shoot the “head pin” at the bottom and then be allowed to continue shooting darts at targets that are connected, and at a higher level. So for example, if your first dart hits the you’ll get 2 darts for aiming at the 5 or 6. If you hit the five, you’d get two darts for aiming at the 1 and 2.
That’s the fun of darts though, you can make up games.