Read this if you need help getting your bot token.
Go and head over to https://discord.com/developers/applications and create a new application.
Once you have created your application, go over to the Bot section and press create bot and then click "Reset Token" and once you have did that, your token will be visible to you. Copy it and boom. You have your token!
(If you need help self hosting the bot & getting your mongodb string, please visit the other files.)