How does the campaign scoring system work?

Solution 1:

From classic.battle.net, we get the following:

You get points for winning the scenario and for killing units.

• Winning Scenario: 500
• Critter: 1
• Peasant/Peon: 30
• Flying Machine/Zeppelin/Tanker: 40
• Footman/Grunt/Transport: 50
• Archer/Axe Thrower: 60
• Ranger/Berserker: 70
• Dwarves/Sappers/Knight/Ogre/Ballista/Catapult/Mage/Death Knight/Demon: 100
• Paladin/Ogre Mage: 110
• Legendary Hero/Submarine/Turtle: 120
• Destroyer/Gryphon/Dragon: 150

• Battleship/Juggernaut: 300

• Wall: 1

• Tower: 95
• Farm: 100
• Lumbermill/Runestone: 150
• Barracks/Oil Rig: 160
• Blacksmith/Shipyard: 170
• Foundry/Guard Tower/Refinery/Town Hall: 200
• Stables/Ogre Mound: 210
• Inventor/Alchemist: 230
• Church/Altar/Wizard's Tower/Temple: 240
• Cannon Tower: 250
• Aviary/Roost: 280
• Keep/Stronghold: 600
• Castle/Fortress: 1500

These point values are then added to get a rank per the following:

• Servant/Slave: 0 - 2000
• Peasant/Peon: 2001 - 5000
• Squire/Rogue: 5001 - 8000
• Footman/Grunt: 8001 - 18000
• Corporal/Slasher: 18001 - 28000
• Sergeant/Marauder: 28001 - 40000
• Lieutenant/Commander: 40001 - 55000
• Captain: 55001 - 70000
• Major: 70001 - 85000
• Knight: 85001 - 105000
• General: 105001 - 125000
• Admiral/Master: 125001 - 145000
• Marshall: 145001 - 165000
• Lord/Chieftan: 165001 - 185000
• Grand Admiral/Overlord: 185001 - 205000
• Highlord/War Chief: 205001 - 230000
• Thundergod/Demigod: 230001 - 255000
• God: 255001 - 280000
• ???: 280000+