you can install all, some or none of your subscription programs on any of your computers. if you own more than one computer, you can install all, some or none on them too. what you install can vary from computer to computer. there's no limit on the number of computers you can do this with.
the only limitation (which is insignificant for always internet connected computers) is that you can only sign in (and therefore open) your adobe apps on, at most, two computers at any one time. but adobe makes this so easy and fast it's, as mentioned, no significant impediment.