Javascript, checkbox and google sheets issue

Help me please
I’m using this code like a form forward to google sheet.
in this code i have 13 check box but when i submit is filled all “ch[]” in sheet, not one or two checked. Therefore i understood that each one ch[] have a value but how can i resolve this issue?
I need forward to the sheets just the checked boxes

<form 
     method="POST"
     action="https://script.google.com/macros/s/00000000000000000000000000000000/exec">

    <input type="text" required="" name="nome" placeholder="Digite seu Nome aqui">
    <input type="number" pattern="^d{11}$" required="" name="telefone" placeholder="DDD + Nº celular">
    <input type="e-mail" name="email" placeholder="Email (opcional)"><br><br>
    
        DIGITE SEU ENDEREÇO <input type="text" required="" name="endereço" placeholder="rua,nº,bairro cidade"><br>
    COPIE E COLE O ENDEREÇO DO MAPA <input type="url" name="end" placeholder="Localização (opcional)"><br><br>


    <label>HATCH <input type="checkbox" name="ch[]" value="60" /></label>
    <label>SEDAN <input type="checkbox" name="ch[]" value="60" /></label>
    <label>CROSSOVER <input type="checkbox" name="ch[]" value="60" /></label>
    <label>SUV <input type="checkbox" name="ch[]" value="60" /></label>
    <label>MINIVAN <input type="checkbox" name="ch[]" value="70" /></label>
    <label>PICUP <input type="checkbox" name="ch[]" value="70" /></label>
    <label>STATION WAGON <input type="checkbox" name="ch[]" value="70" /></label>
    <label>CONVERSÍVE <input type="checkbox" name="ch[]" value="70" /></label>
    <label>CUPE <input type="checkbox" name="ch[]" value="70" /></label>
    <label>LUXO <input type="checkbox" name="ch[]" value="70" /></label><br><br>
    
<p>ADICIONAIS</p><br>

    <label>LAVAGEM (SECO) DE MOTOR <input type="checkbox" name="ch[]" value="20" /></label>
    <label>CERA PLUS <input type="checkbox" name="ch[]" value="30" /></label>
    <label>CHEIRINHO <input type="checkbox" name="ch[]" value="10" /></label>
    

    <label>VALOR <input type="text" name="result" id="result" value="R$ 0,00" /></label><br>
    
    <input type="submit" value="ENVIAR">
    
</form>
</FONT>
</h2>



<script>
String.prototype.formatMoney = function() {
    var v = this;

    if(v.indexOf('.') === -1) {
        v = v.replace(/([d]+)/, "$1,00");
    }

    v = v.replace(/([d]+).([d]{1})$/, "$1,$20");
    v = v.replace(/([d]+).([d]{2})$/, "$1,$2");
    v = v.replace(/([d]+)([d]{3}),([d]{2})$/, "$1.$2,$3");

    return v;
};
String.prototype.toFloat = function() {
    var v = this;

    if (!v) return 0;
    return parseFloat(v.replace(/[D]+/g, '' ).replace(/([d]+)(d{2})$/, "$1.$2"));
};
(function(){
    "use strict";

    var $chs = document.querySelectorAll('input[name="ch[]"]'),
        $result = document.getElementById('result'),
        chsArray = Array.prototype.slice.call($chs);

    chsArray.forEach(function(element, index, array){
        element.addEventListener("click", function(){
            var v = this.value,
                result = 0;
            v = v.toFloat();

            if (this.checked === true) {
                result = $result.value.toFloat() + parseFloat(v);
            } else {
                result = $result.value.toFloat() - parseFloat(v);
            }

            $result.value = "R$ " + String(result).formatMoney();
        });
    });


}());

</script>

<script>


document.querySelector('#submit').addEventListener('click',function(){
 let cliente = document.querySelector('#nome').value;
 let sobrenome = document.querySelector('#sobrenome').value;
 let email = document.querySelector('#email').value;
 let telefone = document.querySelector('#telefone').value;
 let exampleFormControlSelect1 = document.querySelector('#exampleFormControlSelect1').value;

window.open(url);

});

</script>

My Website

sheets result