The button won't appear if your scroll bar is at the top when i. e. page just isn't scrolled. After scrolling the page a button will appear on the right bottom of the page. Below is the procedure to add the button for a Blogger blog.
A demo of the Back To Top button for blogger can be seen by pressing the below button.
|Back To Top Buttons For Blogger|
You can customize the CSS to match your requirements. You can replace the CSS button with an image by changing the CSS background with the URL of the image that is using the tag background: URL()
So that's the simple steps to add a professional Back To Top button to your blogger blog. Share this post with your friends and write your views in comments till then Peace, Blessings and Happy Scrolling.
you can also read my post: How To Add social media buttons for Blogger?