What to do on Halloween if your a Muslim?

Answer 1

according to Islam there is no especial instruction about Haloween. so you if you are musim you can do anything. but doing Haram deeds like lying is always sin in Islam.

prophet Muhammad (PBUH) said:

destroy the ceremonies that have conflict with Islam and others are allowed.

Halloween is not a religious observance, it's an occasion to have fun and dress up if you like to do that. There is no religious or spiritual connection to having fun on Halloween, unless you want that. There are people who place some significance on the date, most people do not.