Provide API to return subscriber points
As noted here
https://help.twitch.tv/s/article/lifetime-subscriber-guide-for-partners?language=en_US
Lifetime Subscribers are a unique benefit for Twitch Partners. Lifetime subscriptions do not generate revenue or additional subscription points.
No where in the subscribers API is a given sub tagged as lifetime.
So whilst we can math the subscriber points from helix, we can't discount these lifetime subs from our count.
Extend the subscribers API to flag as lifetime, (or provide a seperate endpoint)
And provide a API to fetch the Sub Points without having to iterate all pages.

“points” has been added to the “Get Broadcaster Subscriptions” endpoint and documentation has been updated.
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JCog commented
This is a further reaching issue than just permanent subs. Even if you iterate through all the subs, subtract permanent subs, and calculate the sub point count based on that, the number is still innaccurate if anyone has upgraded their sub tier in the last month because the api only shows their current tier, but the points from the lower tier still count until it runs out, but there is absolutely NO way to know this from the api. Please add the sub point count to the api. So many of us rely on this number and it's terribly frustrating not being able to pull it from anywhere.