I am starting a new thread so I can add some clarity to my problem.
I have a new Dell R220 server with Redhat 7.1
3.10.0-514.10.2.el7.x86_64 #1 SMP Mon Feb 20 02:37:52 EST 2017 x86_64 x86_64 x86_64 GNU/Linux
I have resisted it .

I want to install PHP 7 so I won't have to un-install php 5x

Additionally I know that security updates from emails are available but I am unable to install them.

I tried to add the repo as follows:

subscription-manager repos --enable rhel-server-rhscl-7-rpms

Error: 'rhel-server-rhscl-7-rpms' does not match a valid repository ID. Use "subscription-manager repos --list" to see valid repositories.
This is what I have in /etc/yum.repos.d/
dell-preinstall.repo
redhat.repo

Do I ?:
1. Enable one of the repos from the list available.
Here are my repos: http://tritechsc.ksd.org/updates/repo-list-170320.txt
2. yum update;
3. Install the packages from the desired repo.

How do I add:
rhel-server-rhscl-7-rpms

This is the closest to the desired repo:
Repo ID: rhel-server-rhscl-7-beta-rpms
Repo Name: Red Hat Software Collections Beta RPMs for Red Hat Enterprise Linux 7 Server
Repo URL: https://cdn.redhat.com/content/beta/rhel/server/7/$basearch/rhscl/1/os
Enabled: 1