Just wondering what has been the high score without penalties.
This is a 506 match.

As of this minute, 506 (Central Illinois Regional Quarters 1 Match 2) is indeed the highest scoring, penalty free match.

The highest scoring quals match penalty free is currently 382 (New York Tech Valley Regional Quals 53).

The highest scoring match overall - penalties included - right now is 515 (NC District - UNC Asheville Event Quals 1).

All of this and more can be found on The Blue Alliance 2017 Insights Page.