Hi Eric - are you talking about a "Non-Uniform" 3D scale where you can enter in different scales for x, y, and z ?
You can get that done by using Scale1D 3 times, one time for each direction.
Another way that may be easier is the new size editor in the newest Nov-21 v2 beta, that allows you to pop up a little panel to edit the size of the object and there is a checkbox there named "Maintain proportions", which if you uncheck it will allow you to set the sizes separately.