s89

const selectors = {
  wrapper: '.numberQut',
  input: '.qut',
  minus: '.minusQus',
  plus: '.plusQus',
};

const limits = {
  min: 1,
  max: 5,
};

const updateValue = (el, change = 0) =>
  el.value = Math.min(limits.max, Math.max(limits.min, (parseInt(el.value) || 0) + change));

document.addEventListener('click', ({ target: t }) => {
  const change = +t.matches(selectors.plus) || -t.matches(selectors.minus);
  if (change) {
    updateValue(t.closest(selectors.wrapper).querySelector(selectors.input), change);
  }
});

document.addEventListener('input', ({ target: t }) => {
  if (t.matches(selectors.input)) {
    updateValue(t);
  }
});