JSFiddle - React, Tailwind, and code Playground
HTML
<select id="select" multiple>
<option value="blues" selected>Блюз</option>
<option value="rock" selected>Рок</option>
<option value="classic">Классика</option>
</select>
JavaScript
console.log(select.options[0].value);
console.log(Array.from(select.options)
.map(option => option.value););