Actions are under 6 tabs on the right. They are in sections...
Drag it over into the Actions column and let go...
The shape of the action button tells you what kind of action it is.
To move an object, the normal action for this is Move Fixed.
This is for an event that the player doesn't control...
This would be for an event the player controls...
The first 3 actions in the Jump section:
Bounce - default = "not precisely", and against "solid objects only" - but you can change both these settings if needed.
Be careful - there is a similar looking button in the "Objects" section. Go to the "Score" actions on the 5th tab to get the Set Score action button.
If you are setting the score to "0" at the beginning of the game you just add a Set Score and leave it at the default.
play sound - default = "false" so only plays once