What is your question? Where you need the help? This is not Fedora issue! NordVPN just don’t support Rpm-ostree…
Use OpenVPN profiles: https://nordvpn.com/ovpn/
I can’t imagine installing a VPN provider’s own app (likely only tested on Ubuntu), on immutable, as root.
@silverblues I refer to my earlier warning → Can't Install NordVPN in Fedora Silverblue 42 fresh install - #14
You are not to dictate others conditions when they are allowed to answer or what languages they have to learn to what level to suit your demand. If you again post with such demands about who is allowed to answer you or what others have to do, especially in such a prejudging way, I suspend your account for a week to give you time to finally read our Code of Conduct.
Concerning your point about the forum being hard to use: if you have suggestions how to improve our forums, you are welcome to open a topic in the Site Help & Feedback - Fedora Discussion category.
In the meantime, you have the possibility to adjust your topic post in a way that follows our Code of Conduct to make it visible again.