I found below when I googled "can not find skype windows rt" this was in a skype forum.
Okay, i figured it out. have to reset your windows store, if you dont know how theres videos on youtube. Then try to install skype, if it doesnt work restart your tablet and try again. Mine installed but it wouldnt open because it said there was some problems with the app. To resolve them i went to my account on my store and clicked on "my apps". After that i looked for skype and clicked install and it said there was problems and it needed to fix it so i clicked okay and now its working fine. I hope it will work.
http://community.skype.com/t5/Modern...t/td-p/3210974