How to Change Profile title

[Nebulazer03]

I know this probably sounds like a stupid question, but I can't seem to find it for the life of me.
On my profile I accidentally selected "potential Tuner" and I don't even remember doing that.
I am trying to change it but I don't know where. I looked through every page on the web and mobile site versions.
Does anyone know how?

[04silverado6.0]

Thats not a option. Goes by reputation and/or post count.

[Nebulazer03]

Thanks for the explanation!