It does not provide any population.
The King Statue requires a road connection.
For more information see the Set Bonuses.
The King Statue comes with the special set bonus. When it is adjacent to other buildings belonging to the Royal Garden Set the properties of the building are improved.
Every 24 hours the building will produce the following resources. Base resources will always be produced. Bonus resources are determined by how many other unique Royal Garden set buildings it is connected to.