no ways ye you just need to forget it and try to get codes of some other cleo files.
The file is crypted for exactly this reason. You are totally new to cleo coding, and their codes are so successful, and as you are new, you want to do something good, so of course, you want to steal the codes, and put them in your own script, so that you will say " I MADE THIS MOD !". Everybody knows this. That's why the cleo is locked, so that you will not copy the codes.
Most of the other cleos are opened, keep opening other cleo scripts and examining more code flows so that you might perhaps learn something and then create something by starting from the easiest, going till the hardest.