[Alneyan]

Well, I guess most people don't check their experience points. I only have one figure at hand right now:

In my last 1vs1 game with Geoschmo, my score went up by about 150,000 experience points, quite a lot given that there were only the two of us. The game happened in a galaxy with perhaps 70 systems, and dense FQM by the looks of it. There was no Warp Openers/Closers, and Geo's fleets performed a lot better than my own, so the game ended up with my Empire overwhelming him with sheer numbers.

At the end of the game (the turn before his surrender, on turn 71), I had 2 million resources and 850,000 research points, for 450 colonies and 500 ships, so that's what 150,000 experience points is worth. If you want really high values, I guess you should check any of the NGC games: Joachim in NGC5 must have had a much higher number of experience points at the end of that game.