How do i incorporate number counting to my website i.e, how many people have actually used the product I offer. Please what is the JavaScript code?

I want to scroll to that section before the numbers start counting but I keep getting a bunch load of error messages

I tried:

Let valueDisplays = document.querySelectorAll(.num);
Let interval = 5000;

valueDisplay.forEach((valueDisplays) => {
    Let startValue = 0;
    Let endValue = parseInt(valueDisplays.getAttribute("data-val"))
    Let count = set interval(function () {
        startValue += 1;
        valueDisplays.textContent = startValue;
        if (startValue == endValue) {
            clear interval(count);
        }
    }, Duration)
})