Score table is like this, New Zealand 241-8(50), England 241(50), Match Tied, and then Super Over started England 15 runs, New Zealand 15-1 runs, again scores are same but, England won Super Over on Boundary count.
England and New Zealand played such a great innings, they both tried to win but England won the match.
Many Cricket fans are sad that how ICC decided who won the 2019 World cup in between New Zealand and England, Because Super Over also tied, But ICC announced that England won the match by Boundary Count.