This is a bit of a complex one to explain and you'lkl have to excuse a few inaccuracies with Jeopardy as I've never actually watched it.
The first thing you need to do on your powerpoint slide is set up your grid of questions. You can just use a rectangular shape or any shape that takes your fancy and you can lay them out in any pattern you want, not just the classic Jeopardy grid.
The next stage is to create shapes that site directly over your question shapes with the ammount of money allocated to each question. These shapes should hide the questions, so once you have done this, all you need to do is to make each of the shapes with an amount of money on them disappear when that shape is clicked and you are sorted.
So, for each of the shapes with an amount of money allocated you need to create an exit animation. Pick one of the shapes and select Animations in the Ribbon. You should see an option for Custom Animations. If you choose Custom Animations you'll get a task bar pop up on the right hand side. With your shape selected click on Add Effect in the task pane and select an Exit animation.
The final thing you need to do is to make this animation occur when the shape is clicked. The animation you just created should be visible in the Task Pane, with an arrow on the left side. Click the down arrow for the shape you are ammending and choose Effect Options.... Now click on the Timing tab and then click on the Triggers Button. You will then need to click on Start Effect on Click of .... and then in the dropdown menu you need to click the name of the box that you are currently dealing with. Now, when you click present and than click on the shape iut will disappear, leaving just the question visible.
You'll then need to repeat this for every question you have to create your Jeopardy question board.