Hi @odedgutman ,
There’s only the one picture, so can only give you a general idea of what to do.
Check for any rating information that may be on the switch itself, i.e. voltage (V) and current (A) and then search places such as this or mouser.com or digikey.com for one that has the same ratings and dimensions etc. Use the data sheet that is with the component to find a compatible and suitable replacement.
Depending on how it is mounted you may need soldering tools and skills to do the repair
Be aware that there is usually a reason why a switch contact burns out. This is due to excess current flowing through the switch or arcing occurring when the switch is operated. You may have to check what the switch connects to and see if there is a problem there as well. If it is on a control board then check the components around where the switch is connected to for any obvious signs such as being heat stressed etc.
If there is something or if you’re not quite sure, post some images back here. Here’s how to do this 在已经存在的问题里加入图片
Hopefully a start.