JSFiddle - React, Tailwind, and code Playground

HTML

<select name="data[Attorney][empresa]" id="AttorneyEmpresa">
<option value="">Selecione</option>
<option value="3">Sotreq</option>
</select>

JavaScript

$(document).ready(function() {
        $("#AttorneyEmpresa").change(function(){
            alert($('#AttorneyEmpresa option:selected').val());
        })
    });