If we look to the last season ICC World Cup which took place in 2015, Australian bowler Starc became the top wicket-taker. He took total 22 wickets which were the jointly highest. He played eight matches where Black Caps bowlers Trent Boult took also 22 wickets but he played one more match than Starc.

: https://www.sportseon.com/cricket/leading-wicket-takers-in-icc-world-cup/