Asperger’s includes a wide spectrum of characteristics. Many people with Asperger’s would be fine in a typical college setting, without any special support or accommodations… Others might benefit from mild support or assistance, or things like having the option for a single dorm room without roommate. For others, college would be near impossible without extreme support/accommodations, such as having the option to take all classes remotely while living at home. There is a lot of variation, rather than one college fits all kids with Asperger’s. It might be helpful to consider what types of situations might be challenging for your son and review whether desired colleges can assist in those situations.
You should obviously also consider things like which colleges will best support his planned major or career/academic goals? Which colleges offer ECs or other activities that interest him? What is your budget and which colleges meet that budget? And numerous other factors… besides just good for persons with Asperger’s.
Also note that Asperger’s was removed from DSM 9 years ago and is now grouped within ASD.