It is been
<div>Hello</div><div><br></div><div>is this sentence grammatically correct ?</div><div>” It is been a while ...”</div><div><br></div><div>when we can use (is+been) ?</div><div><br></div><div> Thanks </div>

<div>“It has been a while.”</div><div><br></div><div>It can be contracted to “It’s been a while.”</div>

<div>What @Abdullah said. And this would have been better suited for the "answers" section, rather than the "discussions". </div>

<div>You're welcome @Qais ... </div><div>سلام عليكم</div>