How they calculate points if Front ?

[Blinding_Awesomeness]

You want a combination of both "Points Earned from" objectives and "Points Earned from Enemy Kills" while losing as few points to "Points Lost by KO." It's rare to win from only objectives or enemy kills, and likely impossible to win with lots of points lost from KOs. Series Level and PVP Rank do not influence a PVP match in either Crystalline or Frontline; it's a personal achievement.

Battle High Modifiers
Damage dealt and healing potency modifiers to your player character. Battle High points are not shared among teammates of a Grand Company.
-50% points per down*
+2 points per assist**
+10 points per knockout***
+10% (BH1) for 20–39 points
+20% (BH2) for 40–59 points
+30% (BH3) for 60–79 points
+40% (BH4) for 80–99 points
+50% (BH5) for 100 points

Limit Break Generation Modifiers
How fast or slow your limit break generates based on the team's performance.
-25% for 1st Place
+0% for 2nd Place
+25% for 3rd Place

Damage Modifiers
Damage modifiers based on class or job. It's enforced by the mode and cannot be changed by individual or team performance.
-10% damage dealt by SMN, RDM, and WHM
+30% resistance to damage for healers, caster DPS, and ranged DPS
+60% resistance to damage for tanks and melee DPS

The Fields of Glory (Shatter)
-5 points per down
+10 points per knockout
+70 points per small "ice" (distributed among Grand Companies based on damage)
+300 points per big "ice" (distributed among Grand Companies based on damage)
+2 points per 3 seconds for base occupied

Onsal Hakair (Danshig Naadam)
-8 points per down
+8 points per knockout
+50 points per B-rank (blue triangle) node
+100 points per A-rank (red diamond) node
+200 points per S-rank (yellow pentagon) node

Borderland Ruins (Secure)
-5 points per down
+5 points per knockout
+10 points for occupying a base (changing flag color from clear to yours)
+10 points for occupying home base (changing flag color from clear to yours)
+25 points per small node (distributed among Grand Companies based on damage)
+250 points per big node (distributed among Grand Companies based on damage)
+1 point per 3 seconds for 1 base occupied
+2 points per 3 seconds for 2 bases occupied
+4 points per 3 seconds for 3 bases occupied
+8 points per 3 seconds for 4 bases occupied
+16 points per 3 seconds for 5 bases occupied
+32 points per 3 seconds for 6 bases occupied

Seal Rock (Seize)
-5 points per down
+5 points per knockout
+80 points per B-rank (blue triangle) node
+120 points per A-rank (red diamond) node
+160 points per S-rank (yellow pentagon) node
+2 points per 3 seconds per B-rank (blue triangle) node
+3 points per 3 seconds per A-rank (red diamond) node
+4 points per 3 seconds per S-rank (yellow pentagon) node

* "Down" is FFXIV's term for your player character (or your teammate) getting knocked out or "killed."
** "Assist" is FFXIV's term for doing damage to an opponent but not landing the final blow within a certain amount of time before the final blow is delivered by a teammate. Inflicting damage an opponent and then the opponent is knocked out by a Grand Company that is also your opponent does not give you points.
*** "Knockout" is FFXIV's term for an opponent getting knocked out or "killed." To receive knockout points, the player character must deliver the final blow.