Help Load & RW Xml

Hello

for example if I end a game
I close the application

if I restart the application and a new part
the high score is not displayed at startup
as if it does not exist in the xml

carrying the call in the loadContent

how did you go about opening the xml file i can’t find it?
just to see
wearing I know it exists and that I write well in it

Sorry for the inconvenience
thank you