Q. Is there any information about tickets for graduation?

Yes. The link below states the following (the date will vary by semester):

Tickets will be issued for the Commencement ceremony. Each graduate will be allowed a certain amount of  tickets which can be picked up in the Office of the Registrar beginning Wednesday, May 4, through Thursday, May 12.  Any extra tickets will be released Friday, May 13, on a first-come, first-serve basis. Graduates may request additional tickets at the time, if available. Guests without a ticket will not be allowed entry into the Dunham Theater but will be directed to Belin Chapel to watch a live video feed of the ceremony. For guests that are not able to attend, online streaming will be available to view the commencement ceremony at HCU.edu/live.