Moving left and right in air.

I am making a dropper like game and i do not know how to move left and right while falling in mid air. I am a beginner and don’t know a lot of big codes but i know the basics. Please answer soon.I use javascript.

You don’t have a question, you want your game written for you. Even if someone would supply parts of the scripts, you would have to be helped every single step through integrating them.

Please have a look into the Unity Scripting Reference and work through some of the Learning Modules to get you started in developing with Unity.
If you reach a level where you actually understand what the code does that you copy and paste and start writing your own code sometimes, come back and ask some real questions.
I suggest you delete your other question till you reach that level.