need help

[CuGhe]

hi , i played Defence of Crete all day long but score NOT changed ? please help and let me know what to do right , thks fr your time.

 

[destroyerarcher]

It is a high score activity. Scores are based on whatever map has the highest multiplier, I think it changes every season? Check what map gives the most and do that, after doing a 30 wave impossible you're done.