eestineiu is right, generally people don't talk too much about scholarships. I have spoken to several people who told me that they have gotten them but we did not discuss actual dollar amounts.
It seems to be pretty rare to be awarded a scholarship but I think that Tuck does everything in it's power to ensure that if you are accepted you will be able to afford the course. I was very happy with my package, I was awarded exactly what I needed to be able to afford and attend and I believe that the adcom and financial aid office planned it that way.
Scholarships are given based both on merit and on need. I.e. some money is used to help recruit exceptional people that the adcom really want to attend the course, and some money is used to ensure that those who receive an offer are able to attend.
Hope this helps...
Also, here's another article that puts Tuck in a good light:
https://poetsandquants.com/2011/09/01/th ... -startups/