hi,
i will try to demonstrate as simple example
layout a (player touch the coin update score and show it) and when go to next layout the score is shown ... ok
layout A
player on collisions with coin === coin destroy , add 1 to score (global variable) , set text box score to "" & score ( global variable)
layout B
on start of lyout === set text to "" & score ( global variable)
if you do like that , it will work