transforming the contents of a selection

how can i transform or scale the contents of a selection without transforming the selection too

Your question doesn't seem to make too much sense to my mind, perhaps its just the way its phrased. The selection is just a visible indication as to the boundaries of your work.

I'm confused as to the your end goal also?

The only thing I can think of is to copy your content of the selection to a new layer (Ctrl + J)
then Ctrl + T that new layer.

Worth a try

heathrowe

Save your selection as an Alpha Channel.

Copy the contents of your selection to a new layer (Command/CTRL + J)

Transform the contents of the new layer (Command/CTRL + T).

Then if you need it, you can reactivate the original selection from the Alpha Channel you saved.

another way is to make a mask from your selection, then turn off the link next to it on the layers palette - then transform. The mask stays left alone while to move / transform your layer's contents.