how to fix error all compiler error have to be fix before entre playmode ( really need help please)

You know when you fill out a web form, click submit, and it comes back with some things in red and the message "could not submit -- please fix the mistakes"? This is pretty much the same thing.

The scripts in Unity are the same as computer programs. Before it can run, Unity scans the whole program. If you have even one tiny error somewhere, the whole program won't run. Even if you have one error in the Jumping lines, but you aren't going to jump, Unity still can't run until you fix it.

Back to the web page example. Maybe for the phone number you used dashes, or it wants dashes and you left them out. Or your password didn't have any numbers in it ... there are tons of ways to make mistakes filling out a form, and the way to fix each one is different. Same way for errors in the scripts. First you have to learn a little about computer programming. Then look at each individual error. Like jump=0 could be wrong because you forgot the semi-colon, or jump is really a true/false, or you forgot to declare jump, or you put == by mistake, or put it in the wrong place... .