Thanks for playing!
You're absolutely right, the scoring lacks feedback and therefore the core game loop is not clear. The little green sphere goes to the green square and 'eats' them, which gets you a point. I'll make a postjam build where this part gets some more feedback.
The missiles hitting earth don't matter, creating a target prioritisation dynamic. Theme-wise, the earth is going to shit while you only care about protecting your kid and it being fed. Overscoped for 48 hours :)