I'm assuming punntos means points? Anyway, first make your text object (name it TextOne) and drop it onto the layout where you can see it. Press run layout to make sure it displays (it should just say 'text').
If it displays correctly go to your event sheet and create an 'every tick' event (under system, general, every tick).
Then add the action SetText (under TextOne, Text, SetText).
In the text box enter the full variable name minus the ''s (exmpl; 'ScoreObject.Score', or for a global variable, just 'Score')
Now every tick it will set the text to the value of whatever variable or string you're feeding in.