Minecraft wiki entry for Enderman, associated text: 0–1 ender pearl. The maximum is increased by 1 per level of Looting, for a maximum of 0-4 with Looting III.‌[Java Edition only] / 0-1 without looting or nothing with looting ‌[Bedrock Edition only][1]
5 when killed by a player or a tamed wolf.
Any block being held (see § Moving blocks for more information)