I am assuming that you are referring to the values as a field as X,Y and Z. You cannot have it horizontal in QlikSense. But this is not a limitation. If you would like to display it horizontally, I would recommend you to build an extension to achieve it.
not sure if that give any more context to what your trying to do as the numbers do not suggest anything relating to your x/y/z. If you want to drag your filter to take up more screen real-a-state it will show more of your values to select although that will not necessarily be all of them. The reason is Sense responsive layout displays what it can in the view port of the viewer so different users will see more or less of the options available dependent on the size and resolution of their screen. I would stick to space for a drop down and multi select from there.
I totally agree to what Andy Says, but if you still need to format the number in the way you need, I would suggest you to build an extension which is responsive as what Andy has mentioned (Responsive to all layouts and resolutions).