There are no properties in your Dice class - and your homework specifically wants you to use two. Similarly, you need to declare two public methods in your class so they can be called - you don't have any.
OK, we can't see your actual homework - and we wouldn't do it for you if we could, you will learn a lot more by doing it yourself.
But the syntax for a property is
private TypeOfProperty _PropertyName;
public TypeOfProperty PropertyName
{
get { return _PropertyName; }
set { _PropertyName = value; }
}
Methods you already know how to declare and implement.
So all you need to do is create two methods, and two properties.
Then in your Main method, create an instance of the class, use the setters, and call the methods.
It shouldn't take you very long - this isn't complicated!