What wrong With My Script?

Here Is My Script

Anyone Know Why This Is Happen?
And How To Fix This?

As @Trigary said, always post your code int text form (the 101010 button is here for that).

About the question, as the debug console is alerting, in line 11:

if (transform.position.x < -15)

Should be

if (transform.position.x < -15)

You probably just copy-pasted that code from somewhere and didn’t even checked what is happening. The “& lt;” (without space) is the “<” symbol.