Build a Website and Online shop

Hello, i run a bullying association, organization. There will be certain features i need to include in the website, and the theme of the website needs to look really cool and something teenagers would find really attractive. Some Features needed - - Survey for individual states ( 50 states ) - Account Creation/ Login ( In account creation their needs to be an option where they can enter a code to unlock the "FUTURE" section. -Special Section in site called FUTURE Description of what "Future" would be : In this section this is where people will need to sign into their account and can answer quizzes and tests, and for every point they get right, they get a certain number of points. And then as soon as they have alot of points they can go to the REWARDS STORE ( NOT THE SHOP) (this rewards store is only for points ) and can redeem a prize with the points in their account. The section is only available to users who have entered the code that they get from the order they placed. - Shop/Store ( I a stripe account, which would be used for checkout, i can provide code for that if you need it when creating site )\ Thanks. I HAVE A LOW BUDGET ON WEBSITE,