How many points do we get when we hit the gates in Eden?

Points recieved for hitting structures in Eden depend on your base's destruction power - which is based on your APC strength. You need to 1) win the attack and 2) damage the structure.

So it'll be different for everyone, and different between your APCS, but if you're not under attack, use all fighters, use might and defense buff tickets, use Death Rider if he's maxed, and otherwise do everything you can do strengthen your APCS. (Hero skills 1&6, and 4&5 are key).