let form = document.forms.namedItem("fileinfo");
form.addEventListener('submit',(e)=>{
    debugger
    let data = new FormData(form);
    console.log(data);
});

    <form name="fileinfo">
            <input type="text"   name="username" placeholder="Your name:"><br>
            <input type="text"   name="Gender"   placeholder="Gender:"><br>
            <input type="date"   name="date"><br>
            <input type="text"   name="adress" placeholder="Adress:"><br>
            <input type="number" name="phone" placeholder="Phone:"><br>
            <input type="email"  name="email" placeholder="Email:"><br>
            <button type="submit">Submit</button>
        </form>