How do I get rid of compiler errors in Unity 5?

I don’t know how to get rid of them. I am not able to press the play button

There is no way to run your application if you do not correct the compiler errors. Unity cannot understand the code if it has compiler errors, so it cannot be played.

If you can’t fix compiler errors, remove the scripts that cause trouble, or comment the code. It goes without saying that your program won’t work the same way when you remove code, so you should always try to understand the errors and fix them.