When do I get my reward?

In each of those tabs, put your mouse pointer in the list of goals then scroll down. There are more objectives to complete under each of the tabs. They could've made that window bigger, I have no idea why they make you scroll down in each tab. After all of the objectives have been completed on the final tab you'll be able to click on the reward you want out of what's available then there should be a "claim reward" button or something similar to get the reward you chose.