Departure

Hi good day to all,  My wife had visited  Riyadh and now she is about to go back to Home, further I need to know whether am I allow to get inside the terminal during her check-in luggage to help her, if possible please guide me the way in for terminal 1

Every airport I've ever been to has a terminal manager, the only person that can allow entry to non-travellers.
Security concerns mean it isn't normally possible, more so if they have porters to assist passengers, but   he is likely to be able to grant exceptions in special cases.

Sure you can my friend
King Khaled International Airport terminal 1 easy to find in Google maps, you need to reserve time for Riyadh traffic
All the best
Regards,