How do I make a script that changes the max health of specific players?

Hello Julianhak06,

I recommend using a normal script so the changes can replicate to the server, as well as using UserIDs instead of their name, so if they change their name, you won't have to update the script. In my example, we will be using a table and using a for loop to get the contents in that table.

local Players = game:GetService('Players')

local SetHealth = 500 --// The amount their health will be set to

local AllowedIDs = { --// The list of IDs that will have their health changed
	1,
	2,
}

Players.PlayerAdded:Connect(function(player)
	local canSetHealth = false
	for index, id in pairs(AllowedIDs) do
		-- // This will loop through the table and get each ID
		if player.userId == id then
			canSetHealth = true --// This sets the canSetHealth variable to true if the userId matches an id in the table
		end
	end
	
	if canSetHealth then -- // If canSetHealth is true, then it will set their health
		player.CharacterAdded:Connect(function(character)
			character:WaitForChild('Humanoid')
			character.Humanoid.MaxHealth = SetHealth
			character.Humanoid.Health = SetHealth
		end)
	end
end)

GetRankInGroup (https://developer.roblox.com/en-us/api-reference/function/Player/GetRankInGroup)

local Players = game:GetService('Players')

local GroupID = GROUPID
local RankAllowed = RANKID

Players.PlayerAdded:Connect(function(player)
	if player:GetRankInGroup(GroupID) >= RankAllowed then
		player.CharacterAdded:Connect(function(character)
			character:WaitForChild('Humanoid')
			character.Humanoid.MaxHealth = SetHealth
			character.Humanoid.Health = SetHealth
		end)
	end
end)

IsInGroup (https://developer.roblox.com/en-us/api-reference/function/Player/IsInGroup)

local Players = game:GetService('Players')

local GroupID = GROUPID

Players.PlayerAdded:Connect(function(player)
	if player:IsInGroup(GroupID) then
		player.CharacterAdded:Connect(function(character)
			character:WaitForChild('Humanoid')
			character.Humanoid.MaxHealth = SetHealth
			character.Humanoid.Health = SetHealth
		end)
	end
end)