I recommend you take a step back and think thoroughly about your requirement. Creating a decent Qlik Sense model takes time and the more you spend in designing your model, the more the users will thank you in the future.
As AB BC mentioned, a Qlik Sense server will support big amounts of data but of course this depends on server capacity and how big your data is. You should also spend some time understanding the QIX engine. This will help you create an optimise model.
From here we can give you pointers but you should give us more insight on your requirements, environment, data, etc.
I hope this helps.