So because you are using QlikView now:
A Qlik Sense Token is about 10% more than a QlikView Named Cal.
For that there are no server license to pay. So you can plan your server landscape with central and local servers (if necessary).
There are no license types like Document Cals or Usage Cals, for that you can use a token as a named cals or 10 usage cals up to 1 hour / 28 days (this license model is not most used).
For detailed Information aks your local dealer.