JSFiddle - React, Tailwind, and code Playground

HTML

<table cellspacing="0" cellpadding="3" rules="cols" border="1" 
id="OSDataCount" style="color:Black;background-color:White;border-          
color:#999999;border-width:1px;border-style:Solid;border-collapse:collapse;">
    
    <tr style="color:White;background-color:Black;font-weight:bold;">
        
        <th scope="col">COUNT(*)</th>
        
    </tr><tr>
    
    <td>36424</td>
    
    </tr>
    
</table>

JavaScript

var table = document.getElementById('OSDataCount');
alert(table.rows[1].children[0].innerHTML);