<input class="phone-mask" type="text">
<input class="phone-mask" type="text">
<input class="phone-mask" type="text">
<input class="phone-mask" type="text">
<input class="phone-mask" type="text">
<input class="phone-mask" type="text">
<input class="phone-mask" type="text">

document.querySelectorAll('.phone-mask').forEach((e) => {
  const phoneMask = IMask( e, { mask: '+{7}(000)000-00-00' })
})