Dan (Daniel) Carter played 112 games of international rugby for New Zealand from 2003-2015 and scored 1598 points. He averaged 14.27 points per game and scored 29 tries.

Jonny Wilkson (1998-2011) has scored the second highest number of points with 1246 at an average of 12.85 per game. He played 97 games for England and the British and Irish Lions. He averaged 12.85 points per game and scored 7 tries.

Neil Jenkins (1990-2003) scored 1090 points while playing 87 games for Wales and the British and Irish Lions. He averaged 12.53 points per game and scored 11 tries.

Ronan O'Gara (2000 - 2013) scored 1083 points while playing 130 games for Ireland and the British and Irish Lions. He averaged 8.33 points per game and scored 16 tries.

All of the top 10 points scorers in Rugby Union have played at fly-half.

The British and Irish Lions includes players from England, Scotland, Wales, Northern Ireland and Ireland.

More Info: en.wikipedia.org