NASP targets have five colors and ten scoring rings, starting on the outside with the two white rings counting as 1 and 2 points, black as 3 and 4, blue as 5 and 6, red as 7 and 8, and the gold as 9, 10 and the inner "X-ring", usually used for breaking ties. 

Throughout these leaderboards, you'll see scores reflecting those colors. An END is five arrows, so hitting the gold with all five gives a score of at least 45 points out of 50. A ROUND is five ENDs, or 30 arrows, and hitting gold with all of them gives a score of at least 270 out of 300. Those thresholds are reflected in the highlighted colors behind the scores. 

As you can see from the Achievement and Recognition Tags chart at the bottom of the page, I award dog tags when archers achieve these thresholds with various bows and distances. A perfect 50 or 300 earns a purple tag, and a Robin Hood (breaking one arrow with another) earns a green tag. There are some others that are not listed here because they're more rare.