What do you mean by "deleted the login under the Home Directory" did you delete a file? If so which one specifically?

Can you be more specific as to what you deleted?

When I clicked dashboard and then went into sitemap, then I accidentally deleted one of the system file "Login" under the Home directory. Then I added back the login page by following the advice from the forum: Dashboard ->Pages and Themes -> Single Pages -> type login (in the box at the bottom) -> click Add, and added my Login page back.

While the login page is back, when I put in my admin login username and password originally generated by Simple Scripts when I installed Concrete 5 into my Bluehost control panel (I used Bluehost as my web host), I could not get access to my website for admin changes, because "Page cannot be found".

Hope this is clearer. Thank you.

I think (but I am not 100% sure) that this page may correlate to one of the two files:

concrete/controllers/login.php
concrete/single_pages/login.php

I think it is the first one

can you check to see if they are both there?

Is this a live site? I have a feeling you may have to reinstall :(

Yes, my site was live already. I did end up reinstalling Concrete5 to get back my login page. But I am curious is there an easy way to find the 2 files you mentioned. I don't know any computer codes and I used Plain Yogurt theme. Thanks.

You could find those files in one of a few ways:

ssh (remote shell) into the server (not every hosting company allows this)
ftp and look at your file systems
network solutions might have a way to browse your files within their control panel, take a look around there as it is probably the easiest way to look. If you can't find it, contact network solutions, they might be able to assist.