Use <select> attribute with numerous options to show value with choice's option.

 <select class="form-select mb-3" aria-label="Default select example">
    <option selected>Open this select menu</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>

 <select class="form-select rounded-pill mb-3" aria-label="Default select example">
    <option selected>Search for services</option>
    <option value="1">Information Architecture</option>
    <option value="2">UI/UX Design</option>
    <option value="3">Back End Development</option>
</select>

<select class="form-select" aria-label="Disabled select example" disabled>
    <option selected>Open this select menu (Disabled)</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>

Use multiple attribute to select multiple values and size="your value" attribute to show a number of choice option within a select area.

<select class="form-select" multiple aria-label="multiple select example">
    <option selected>Open this select menu (multiple select option)</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>

<select class="form-select" size="3" aria-label="size 3 select example">
    <option selected>Open this select menu (select menu size)</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
    <option value="4">Four</option>
    <option value="5">Five</option>
</select>

Use form-select-sm class to set small select size and form-select-lg class to form-select class to set large select size. No such class is required for default select size.

<select class="form-select form-select-sm  mb-3" aria-label=".form-select-sm example">
    <option selected>Open this select menu</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>

<select class="form-select mb-3" aria-label=".form-select-lg example">
    <option selected>Open this select menu</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>

<select class="form-select form-select-lg" aria-label=".form-select-lg example">
    <option selected>Open this select menu</option>
    <option value="1">One</option>
    <option value="2">Two</option>
    <option value="3">Three</option>
</select>