Ex.

<div class="btn-group dropdown-primary me-2 mt-2">
    <button type="button" class="btn btn-primary dropdown-toggle" data-bs-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
        Primary
    </button>
    <div class="dropdown-menu">
        <a href="javascript:void(0)" class="dropdown-item">Home</a>
        <a href="javascript:void(0)" class="dropdown-item">Services</a>
        <a href="javascript:void(0)" class="dropdown-item">About us</a>
        <div class="dropdown-divider"></div>
        <a href="javascript:void(0)" class="dropdown-item">Contact us</a>
    </div>
</div>