How To Add Google Sitemap Create For Blogger Blog

Go to the link:  http://ctrlq.org/blogger
Type in your blogspot URL Example: http://examplesome.blogspot.com

Now Click Button "Generate Sitemap"
Copy the entire text to your clipboard

Next login your Blogger account
From your dashboard, Go to Settings → Search preferences → Custom robots.txt.
Click Edit and Enable the custom robots.txt content.
Paste the generated sitemap into the textarea and Click Save changes button.