Am I allowed to create the alternative account?

Since the main account have 35 followers, I am a bit worried that my Discord bot will be forked from someone because it have the bot data for the features as JSON, also I don’t have cycles to make it private, so I have to create a alt account to create my Discord Bot as a private session.

Yes, you are allowed to make alternate accounts.

A better way to hide sensitive information is to use Secrets.