What are the basics of scripting?

I'm thinking of making a game called ''Cashed Up''. For example, I need help making a money leaderboard. Anything other than that is fine too.

There is an introductory tutorial on scripting at the Official Roblox Wiki that you should read if you want to start scripting in Roblox Lua:

http://wiki.roblox.com/index.php?title=Absolute_beginner%27s_guide_to_scripting

You can see all the tutorials available here:

http://wiki.roblox.com/index.php?title=Lua_Help

... and in particular, with regards to your specific question, you should read about leaderboards:

http://wiki.roblox.com/index.php?title=Leaderboard

That should get you started!

Don't request scripts.