well, not sure why you are using multiple scene..and I dont think _root. is necessary I never use that for my scores, I use something like this on the first frame
ActionScript Code:
score = 0 //which would be your total im guessing? and score is the variable name on the dynamic text box
and then on the movie clips you are pressing you'd have something like
ActionScript Code:
onPress(){
score += 1 //where you can use as total also if you like
but if you are doing different scenes you could try naming each variable with a number at end and then do something like
ActionScript Code:
total = score1+score2+score3 //where a dynamic text box named total would add up the other three scores
you should upload your .fla file though so we can see it