You should ready the manual first, it's highly recommended.
To move anything from right to left or left to right, you'll need to give the object a behavior, or make events like:
Listener: When mouse button is down;
Action: Set Object.X = Object.X+1 (or -1);
It will be checked every tick (unity of time where the code runs, the code is checked once each tick), so, while the player still pressing the button, the object will move itself 1 pixel in X.
If you want make it independent of framerate, you should make it with Deltatime, and so on.
Ready the manual first and try later, and you'll be able to do much more with less time.