<div class="input-group">
  <span class="input-group-text">$</span>
  <input type="text" class="form-control" />
  <span class="input-group-text">.00</span>
</div>

<div class="input-group">
  <input type="text" class="form-control">
  <button type="button" class="btn btn-indigo" data-bs-toggle="dropdown">
    <span class="caret"></span>
  </button>
  <ul class="dropdown-menu dropdown-menu-end">
    ...
  </ul>
</div>