How to unset the title of a custom form field
@Fazeela Abu Zohra try to unset the value in .theme file. write a form alter and kint $form variable .Find your label value

function est_form_alter( &amp;$form, &amp;$form_state, $form_id ) { 
  if($form_id == 'your_form_id'){
    kint($form);
  }


and then simply unset the variable.

unset($form['form_id']['#value']);


Here,i assume you find your variable at $form['form_id']['#value'].Hope it  will be useful to you.