First, you will need to copy the link to my blog (or another blog that you want to follow). This is my link: http://victorialsmithauthor.blogspot.com/
In your Wordpress Reader, on the top left it says "Following" with a gear next to it. Click the gear. In the app, tap the tag.
All you need to do now is paste the link of the blog where it says "Enter a URL to Follow" and click Follow!
I hope this helped you figure out how to follow Blogger (and other types of blogs) with Wordpress using the link of the blog!