Influence Boards are a type of collectibles with which you can gather some influence relatively quickly. There are a total of 150 influence boards in Forza Horizon 4. In order to score an influence board, all you have to do is simply drive through it and destroy it. They can be divided into three groups, depending on how much experience you get after destroying a certain influence board.
There are a total of 75 influence boards that will grant you 1,000 influence, and they are usually very easy to get, for example they are located near roads, etc.
The second group are the boards which will grant you 3,000 influence and are a bit more difficult to find, for example they are hidden behind buildings or in desolate places. There are 50 such boards.
The last group are boards that will deliver 5,000 influence. There are 25 of them. Some of them are easily accessible but many of them are in hard to reach places. You will have to use nearby ramps or terrain to jump in the air to get to them.
In total after collecting all the influence boards you will get 75 * 1,000 + 50 * 3,000 + 25 * 5,000 = 350,000 influence.
