Uni/ Study Courses for 18 Year Old Son

Hi everyone, I have this month relocated to Riyadh. The plan is for my family to come out mid/ end next year. My son is just finishing upper sixth form and we are looking whether it would be possible for him to study in Riyadh? Does anyone have experience or advice if this is a possibility? An undergraduate course or similar?

https://www.expat.com/en/guide/middle-e … rabia.html