Kill the mob with a charged creeper explosion
Lure a charged creeper near the mob
Make sure the charged creeper is the source of the kill
Collect the dropped mob head
Use a charged creeper to get zombie, skeleton, creeper, piglin, and other mob heads where supported
In Java Edition, use a charged creeper for most mob heads
In Bedrock Edition, use a charged creeper for mob heads that can drop this way
Find mob heads in some structures or loot chests where available
Use commands in Creative mode if cheats are enabled
Use the /give command to obtain specific mob heads
Use the /summon or /loot commands with command access where needed