Wihtout authentication from the user
You can create 10,000 cost 1 topics.
If you authenticate a user, the public topics for that user become cost 0.
So if you authenticate all users you can have infinite topics.
With out authenticating the user(s)
You can subscribe to 5000 streamers
5000 stream up’s
5000 stream down’s
As they will be cost 1.
All EventSub subscriptions are created using an App Access Token.
If you have a user token for a user, you still use your App Access token to create the Webhook transport based EventSub. Just topics you create for that user will be cost 0