Scripting languages cover a lot of territory from Javascript to python to Windows .bat files (and Unix shell scripts). They are incredibly useful but only as PART of your repertory. Use Python if you are interested in networking and UNIX, C# if Windows and dot NET, shell scripting if a criminal hacker or other geek (Shellshock is a scripting vulnerability) etc.

As Jeff P has said there is no best, but if you are trying to decide a language to learn C and Java are the usual ones to begin with.

As the others say, it depends on what you are trying to do...

For programming directly on a computer, use shell script / .bat files for simple stuff and C for serious programming.

For creating web sites, use html & PHP.

There is no "best"--use what you're comfortable with or what suits your application the best.