When I started at SO roughly 8 years ago, the highest rep. that gave you extra privileges was 20,000.
so that was always my goal.
However, in writing this, I discovered that they have added a new privilege at 25,000.
It's taken me a while:
but I finally got there.
One of the reasons it's taken so long is that I only answer questions in a very small "obscure" category i.e. around Identity mainly ADFS, SAML and WIF.
I got a big boost from getting a 500 rep. bounty which for a brief instant of time put me into Jon Skeet territory.
i.e. the top 0.01% !!!
(Normally I sit at about 2%).
In terms of where I sit among the approx 5 million regular SO users (who have rep.):
My badge collection is coming along nicely.
And every now and then I get an extra bonus:
The top non-Microsoft article around MSAL.
OK - that's because it's brand new and there are basically zero articles but hey - I'll take it :-)
So on to 25,000 - only 4,979 to go!