Answers for "how to get any user by ID with a discord bot JS"

discord.js get user by id

client.users.cache.find(user => user.id === 'USER-ID')

check user by id discord js

if(!message.author.id ==`329023088517971969` || !message.member.hasPermission(['MANAGE_GUILD'])) return message.channel.send(`You don't have the permissions to do this!`)
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how to get id of the server discord js bot

let server = message.guild.id, // ID of the guild the message was sent in
  channel = message.channel.id // ID of the channel the message was sent in