According to Official Guinness Records,
The highest score for a single-credit completion of Time Crisis 3 is 2,857,270, achieved by Chris Spahn (USA) at Boomers Entertainment Park, Dania Beach, Florida, USA on 8 August 2009.
Chris was only hit by enemies twice during the attempt.
For a complete list of 2009 records, please visit 2009 Guinness Records in United States.