<!-- 
Forum question answer only 
https://codepen.io/paulobrien/pen/qBjYPxa
-->
<div class="container">
  <div class="row">
    <div class="col d-flex">
      <input type="email" class="form-control w-75" name="buyerEmail" id="Email1" aria-describedby="emailHelp"><i class="bi bi-patch-question-fill"></i>
    </div>
  </div>

/*

Forum question answer only 
https://codepen.io/paulobrien/pen/qBjYPxa
*/

/* just for testing as I don't know what actula styles you have for this*/
.bi-patch-question-fill {
  background: red;
  width: 20px;
  height: 20px;
  margin: 0 0 0 5px;
  align-self: center;
}