How to use this installation profile?

1. Follow the usual preparation steps to prepare the Drupal installation:
   1. Download and uncompress Drupal
   2. Create the database
   3. The settings.php file
   4. Be sure to not start the installation script just yet.
2. Download or clone os2forms installation profile. If use downloaded version, remember to unpack it.
3. Copy the entire directory that you just downloaded/cloned into the profiles directory located inside the Drupal root directory. For example, if you have a Drupal installation at /home/www/htdocs , you would want to copy the entire os2forms directory into /home/www/htdocs/profiles/os2forms. So the path looks like /home/www/htdocs/profiles/os2forms/os2forms.profile
4. Go to your site's install.php to start the installation process.
5. When you are presented with the option to select a profile, select your desired profile.

source: https://www.drupal.org/docs/7/install/using-an-installation-profile