This looks like it’s from Sevadus website. And if I recall, it is only for Subs.
Since Twitch does not allow you to get a full followers list anymore, you will need to record a follower as they come in. You could check they they are following afterwards, but it will cause issues and take longer and longer the more followers you have.
Like Night said, you would need the knowledge to code this – If you are willing to learn, here is where you start with learning the Twitch API.