Do you want to know how many times it was touched, or how many touches at once?
Eg: If I tap a square 4 times, you see 4. If I put 4 fingers on it I see 4.
Touch (https://www.scirra.com/manual/119/touch) is the quick and easy way to go.
For either option you can create a variable to hold the count, and then use
System>Touch>On Nth Touch Start (or End depending on your goal)
count each time it starts/ends.
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Thanks for you respond,
Let me explain it this way:
For example i have a button and a text in my layout:
each time that player touch the button, the text shows different numbers for each touch, like 1,2,3,...
First touch button: Text changes to 1
Second time touch same button: same text change to 2
...etc
I dont know how to explain better, sorry <img src="{SMILIES_PATH}/icon_e_sad.gif" alt=":(" title="Sad" />