The password for the next level is stored in a hidden file in the inhere directory.
Commands you may need to solve this level
ls, cd, cat, file, du, find
Use ls will not show it because it is hidden inside another directory. Thus, change directory and use option -a to not ignore hidden file (file start with .). Finally, use cat to show the contents.
cd inhere ls -a cat .hidden pIwrPrtPN36QITSp3EQaw936yaFoFgAB