I ended up fixing the issue, this is how I solved it:
Apple Documentation, "* Don't see the Text Message Forwarding setting on
your iPhone? Go to Settings > Messages, turn off iMessage, turn it
back on, tap Send & Receive, tap Use Your Apple ID for iMessage,
then sign in with the same Apple ID used on your other devices."
But they failed to specify that "Start New Conversations From" HAS TO BE your AppleID email address and not your phone number, after selecting your email address associated with your AppleID, the text forwarding option enables itself. From there it was easy as I enabled both my Macbook and iPad ON.