I'm really bad at making stuff. You set the X position of the (badly made) tesseract by the X variable, same with the Y variable, and so on. The w axis is the 4th axis in 4 dimensions. You can set the FOV of both the Z (3rd dimension) and the W (4th dimension) axis. If you set the "FOV lock binary" to 1, the FOV-Z and FOV-W will be the same value at all times. The FOV-W will be hidden if the FOV lock binary is 1. Don't set W to 0. The tesseract will look weird.
Thanks to people who made tutorials of how to make 3 dimensions in scratch! Without them, I couldn't have made this. (The tesseract is pretty bad though)