$('.minus').attr('id', 'minus');
$('.plus').attr('id', 'plus');
const minus = document.getElementById('minus')
const plus = document.getElementById('plus')

plus.addEventListener("click", () => {
var count = document.querySelector('[title="Qty"]').value;
    count++;
    document.querySelector('[title="Qty"]').value = count;
    
});
minus.addEventListener("click", () => {
   
    var count = document.querySelector('[title="Qty"]').value;
    if(count >1){
        count--;
        document.querySelector('[title="Qty"]').value = count;
    }
    });

    <div class="padding-td">
                                <button class="btn border text-danger minus"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-dash" viewBox="0 0 16 16">
                                <path d="M4 8a.5.5 0 0 1 .5-.5h7a.5.5 0 0 1 0 1h-7A.5.5 0 0 1 4 8z"/>
                            </svg>
                            </button>
                            <input type="number" title="Qty" value="<?php echo $cart_item["quantity"]?>" min="1" class="form-control w-25 d-inline-block input">
                            <button class="btn border text-danger plus"><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-plus" viewBox="0 0 16 16">
                                    <path d="M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z"/>
                                </svg>
                            </button>
                                    </div>