I checked my order history on the act website but there isn’t any indication of whether or not they’ve been received by the colleges I sent them to like on the SAT website. Is there any section in my act account that would have that information, or should I just call them?
You can’t tell from the ACT or CollegeBoard side. At many schools, shortly after submitting your app you get information on how to sign into a portal to check the status of your app. Usually it tells you if all the components are there or not. But it can take a while (days) to update sometimes, it is generally done manually by someone in admissions. So don’t sweat immediately if something doesn’t show up, give it a few days before contacting admissions.
The ACT website will not help you determine this. Check the portals of your selected schools.