This will almost certainly be a problem with your folder hierarchy. If you can post a screenshot showing the files and folders it will help.
Tusky wrote: ↑
Mon Oct 16, 2017 11:54 am
using cpanel to upload the files through godaddy
That method is fraught with problems and may be contributing to your problem - you should download the zip file from wherever it is located, unzip it on your local machine and then use an ftp program (such as filezilla) to upload the files to your site.
Also if you are using cpanel/Godaddy would I be right in guessing that you have used Godaddy's "one click" install for phpBB - again this may also be contributing to your problems as there are many known issues with that product (which is nothing to do with phpBB other that they have modified the files)