Can someone explain the icon in every building mentioned in wiki which represented with points?

[All Free Now]

- saw this in wiki on each building.

What's the purpose of this icon in every building?

When someone plunders, Is this have any impact?

Is it has any effect on building by doing motivating or polishing?

Will it increase or decrease anything in the game by adding or removing any building?

What was the 'points' actually it is representing?

 

[CrashBoom]

that are the ranking points the building gives for the player ranking

Will it increase or decrease anything in the game by adding or removing any building?

deleting a building from your city (or move it back to inventory) will decrease your ranking points

renovating (or one up) will give you the difference from old age to new age

 

[All Free Now]

ranking points the building gives for the player ranking

So, plundering/motivating/polishing doesn't have any effect on ranking points. Is my understanding correct?

 

[Fire Witch]

So, plundering/motivating/polishing doesn't have any effect on ranking points. Is my understanding correct?

Yes.

You can look up everything regarding ranking here: https://en.wiki.forgeofempires.com/index.php?title=Player's_Ranking