Thank you for your replies so far.
I have been thinking about this overnight and the best way I can explain is using a Boxing Promoter sim as an example. You have you're in game boxers and they have a list of stats that determine the outcome of different events in game e.g. A fight, Promo event and contract negotiations. As well as calculating attendance. With that in mind the math I'm looking for is most likely probabilities.
Yea you're gonna want to look into probability and stat for that. Unless there's some 3D graphics aspect to it (I'm not too sure from your post) in which case, there may be more that you need to know depending on what it is and what you are using to build the game.
There is also math for 2d graphics, but again, if all you're doing is menus, then you probably don't need much math for that.