When do the kids start having homework? Nursery?

my son goes to elementary school. now he absolutely does not want to complete assignments in those subjects that are not interesting to him. My wife and I are worried. He easily solves examples in mathematics and dcmay he likes it. but does not want to complete the English assignment. I'm afraid this is a family trait. My brother's son also did not want to do those lessons that were not interesting to him. but at the same time he could study excellently in other subjects. it lasted until college. I worry .