Weird buzzing/humming noise coming from my monitor only while playing the sims 4

@Bakedpotatoe5  When you say you have the sound turned off, is that in-game or for your system overall?  If it's just in-game, please try muting your system: click the sound icon in the lower-right corner of the screen to see the option.

If that doesn't or didn't help, please move everything off your desk that has an electronics component and that isn't essential to your play.  For example, leave the mouse and keyboard, of course, but remove your phone, plus any external speakers if you have them.  Let me know whether the sound is still present.