I can run ArcMap 10.7 on a Surface Pro X (which has ARM64 chip, running Windows 10) while connected to our institution network. But I want to run it offline in the field on the tablet. ArcMap seems to run OK (not super smooth but usable) with the built-in emulator for 32-bit programs. However, ArcGIS Administrator does not work properly. I have an active single-use (Advanced) licence, and I can run the activation process all the way to the end (I even get the message the the activation in complete), but I click 'End', and I get back to the start, and the software is not activated. Therefore I cannot run ArcMap while offline. Questions (1) will you fix this issue and (2) will you soon release an ArcMap version compatible with ARM64? thanks.
I'm sorry that you're having problems with ArcMap, but I'm afraid you may not get a quick response in this forum as ArcGIS Hub is a Web App and we don't necessarily have the knowledge to diagnose issues with ArcMap. Have you tried posting this question in a GeoNet community more related to your topic? I don't know for certain, but you might have better success in this forum: ArcGIS Desktop Installation support. Alternatively, here is the list of all product communities in GeoNet: Product Communities