Blogger is free to use but has some limitations. We can create up to 100 blog under a Google account. There are many reason we delete our junk or unnecessary blog but sometimes we accidentally delete our functional blog site. Those who accidentally delete their blog they should know that you can restore your blog within 3 months (90 days). Because Google give you the opportunity to restore deleted blog if you want to recover something important from your deleted blog.
Recommended: How to Delete or remove a Blogger Blog safely?
Generally within 3 month if you don't restore your blog then Google treat those deleted blog as scrap. So they permanently remove from their server automatically. And the owner of the blog lose their blog data forever. So if you would like to restore your deleted blog you can follow the below steps that might be helpful to you.
Step 1 Sign in to your blogger.com and go to blogger dashboard
Step 2 You will see list of your blogs and left side of the page you will see deleted blogs. Click on it.
Step 3 Then select click on Undelete button next to your deleted blog name.
Step 4 You have successfully restored or undelete your deleted blog.
You can check it in your blog list and see that it has restored. Now you will able to edit, creating new post, anything you can do. Don't worry about your restored blog because it will work smoothly as like before. Some use think that after deleting blog Google delete all the blog link from search engine. But it's not true. You have 90 days to undelete a blog so within 90 days Google won't remove any indexed link from search engine. However if you want you can Ping your site after publishing some fresh content.