2.Make sure you put check mark to “Expand Widget Templates”
3.Find this tag by using Ctrl+F <data:post.body/>
4.Paste below one code(as your like) ,before <data:post.body/>
Horizontal Count Button
<b:if cond='data:blog.pageType == "item"'>
<div style='float:right;margin-left:10px;'>
<script
type="text/javascript"
src="http://platform.linkedin.com/in.js"></script><script
type="in/share" data-counter="right"></script>
</div></b:if>
Vertical Count Button
<b:if cond='data:blog.pageType == "item"'>
<div style='float:right;margin-left:10px;'>
<script
type="text/javascript"
src="http://platform.linkedin.com/in.js"></script><script
type="in/share" data-counter="top"></script>
</div></b:if>
No Count Button
<b:if cond='data:blog.pageType == "item"'>
<div style='float:right;margin-left:10px;'>
<script
type="text/javascript"
src="http://platform.linkedin.com/in.js"></script><script
type="in/share"></script>
</div></b:if>
5. Now click preview and click save template . you are done.