Maximum four external displays, each at up to 4096 x 2304 resolution. You can't daisy chain all of them because USB-C only supports up to one display, and Thunderbolt 3 only supports up to two displays, over a single cable.
To connect with the fewest cables possible, you could buy two Thunderbolt 3 docks and then you could have four displays and charging power all over two cables. Note if you do this the two Thunderbolt 3 cables will need to be connected to opposite sides of the MacBook because each side only has one Thunderbolt controller and thus there is a two display limit on each individual side.