Do you mean the battery percentage sign? Your question lacks details.If you want the percentage app i do not suggest getting it because it is inaccurate and just a waste of storage space.You cannot get the percentage sign on an iPod without an app it sucks i know.
What do you mean by icon like apps? also to get it on the lock screen you just have to charge it and turn it on at the same time. and on the home screen it should be in the top right corner. hope this is helpful to you.