You can always get the skel files from your home user dir because , at the time of user creation all skel files will be copied to the new users home directory. So as of now you can find files/ folders in your early created user home directory. Probable folders/files in /etc/skel/ are as follows:
.bash_logout
.bashrc
.config (directory)
.profile
These files and folder will be there in /home/username/ where the dot(.) infront of it indicates they are hidden. Just take a look and copy back to /etc/skel/ . Thats it.