Highest score by a team was 370.It was scored by team India.
181 runs by Sir Viv Richards of West Indies in 1987 against Sri Lanka.
Final score of cricket world cup 2011 final match: Sri Lanka:274/6 India;277/4
The highest score achieved by a single team at the Cricket World Cup was 413-5, achieved by India against Bermuda at the 2007 competition.
260/6 by Sri Lanka against Kenya in Johannesburg on 14 September 2007 during the ICC World 2020
Sri Lanka scored the highest total in the 1992 Cricket World Cup. They scored 313 runs against Zimbabwe in the third match of 1992 Cricket World Cup.
338 and the match was a tie
Highest T20I score is 260-6 for Sri Lanka against Kenya in 2007 T20 World Cup in South Africa.
Gary Kirsten (South Africa) holds the record of highest individual score in Cricket World Cup. He scored 188* against UAE in 1996 world cup.