I haven’t seen a single post or YouTube video on this so I thought I’d ask. How would you go about creating a killstreak system like listed below?

3 Player Killstreak: 15 Coins & 1.5x+ XP

5 Player Killstreak: 20 Coins & 2x+ XP

10 Player Killstreak: 25 Coins + 2.5x XP

15 Player Killstreak: 30 Coins + 3x+ XP

20 Player Killstreak: 35 Coins + 3.5x+ XP

25 Player Killstreak: 40 Coins + 4x+ XP

30 Player Killstreak: 45 Coins + 4.5x+ XP

35 Player Killstreak: 50 Coins + 5x+ XP

40 Player Killstreak: 55 Coins + 5.5x+ XP

45 Player Killstreak: 60 Coins + 6x+ XP

50 Player Killstreak: 65 Coins + 6.5x+ XP

55 Player Killstreak: 70 Coins + 7x+ XP

60 Player Killstreak: 80 Coins + 7.5x+ XP

65 Player Killstreak: 85 Coins + 8x+ XP

70 Player Killstreak: 90 Coins + 8.5x+ XP

75 Player Killstreak: 95 Coins + 9x+ XP

80 Player Killstreak: 100 Coins + 9.5x+ XP

85 Player Killstreak: 150 Coins + 10x+ XP

90 Player Killstreak: 200 Coins + 10.5x+ XP

95 Player Killstreak: 250 Coins + 11x+ XP

100 Player Killstreak: 500 Coins + 15x+ XP

First off, how would I go about tracking a player’s killstreak or even making a system like this? I’d want it to reset when a player dies or leaves the game.