For anyone interested in this post and wondering about what needed to be done to establish the connection to the database:
I am using Blue Host's shared services and assumed the connection file required the login details for the database but it needs the login details for the Blue Host account instead.
$username_powergallery = "BlueHostAccount_Username";
$password_powergallery = "BlueHostAccount_Password";
Thank you for the outstanding support Jason!!