playerScore

Step1: Create as many objects as you want.

Step2: Turn them all into buttons.

Step3: Make some text.

Step4: Make it dynamic and give it a varible of 'score'.

Step5: Right click on a button > actions. Step6: Copy and paste the following code.

on (release) {
    _root.score = _root.score+100;
}

(This says when you release the mouse on the button change the dynamic text too itself plus whatever)

Step7: Change +100 to your choice
Step8: Do the same to all your buttons.
Step9: Control > Test Movie

BTW: It is absoululety VITAL that you don't put anything in the text box OR the instance name. Leave these blank!