You shoud add it in skins/_html_header.inc.php

I don't have the _html_header.inc php in my skin folder. Also how do I add it, what will it look like and where exactly should I put it inside the php file?

Goto your folder ->blogs ->skins and look down the list.
You will find _html_header.inc.php

Simply place your meta tag code in with all the others there by default.

<meta name="description" content="<?php $Blog->disp( 'shortdesc', 'htmlattr' ); ?>" />
	<meta name="keywords" content="<?php $Blog->disp( 'keywords', 'htmlattr' ); ?>" />
	<?php robots_tag(); ?>
	<meta name="generator" content="b2evolution <?php app_version(); ?>" />

Thanks a bunch that did it!!!!

I thought you could just make a google html file and upload it to the root dir of the website To verify it.