Technically it is doable, but practically this needs to be very careful.
Each running Bisq app has indeed it’s own data directory.
If you want to use the Bisq app with the same data (accounts/wallet/etc), you have to bring properly your data, each time, from one computer to the other (ie always synced), which is not so practical.
Badly done, this will result in a mess.
Separate computers = separate accounts, is probably much simpler.
In any case, better begin with only one account, and understand really well how it works.
Before trying with a second computer.