You’ll need to copy the flag and globe HTML, here it is
<a href="https://s07.flagcounter.com/more/SGYj"><img src="https://s07.flagcounter.com/count/SGYj/bg_FFFFFF/txt_000000/border_CCCCCC/columns_8/maxflags_248/viewers_0/labels_1/pageviews_1/flags_1/" alt="free counters" border="0"></a>
<script type="text/javascript" src="https://je.revolvermaps.com/r.js"></script><script type="text/javascript">// <![CDATA[
rm_f1st('0','220','true','false','000000','4od8mlz96cs','true','ff0000');
// ]]></script><object data="https://re.revolvermaps.com/f/g.swf" type="application/x-shockwave-flash" id="rm_3a3sZq" width="220" height="220"><param name="movie" value="https://re.revolvermaps.com/f/g.swf"><param name="allowNetworking" value="all"><param name="allowScriptAccess" value="always"><param name="wmode" value="window"><param name="flashvars" value="m=0&n=false&b=000000&r=true&i=4od8mlz96cs&v=true&c=ff0000&s=220"></object>
Then paste it into the sidebar.php file, but I don’t know where you want it.
You’ll then need to think about how to get the Flag counter to fit.