How to save multiple boolvalue?

local ds = game:GetService("DataStoreService")
local bool = ds:GetDataStore("BoolSaving")

game.Players.PlayerAdded:Connect(function(plr)
    local boolValue = Instance.new("BoolValue")
    boolValue.Parent = plr
    boolValue.Name = "BoolValue"

    local boolValue1 = Instance.new("BoolValue")
    boolValue1.Parent = plr
    boolValue1.Name = "BoolValue1"

    boolValue.Value = bool:GetAsync(plr.UserId.."-bool") or false
    boolValue1.Value = bool:GetAsync(plr.UserId.."-bool1") or false
end)

game.Players.PlayerRemoving:Connect(function(plr)
    bool:SetAsync(plr.UserId.."-bool", plr.BoolValue.Value)
    bool:SetAsync(plr.UserId.."-bool1", plr.BoolValue1.Value)
end)

SUGGESTION: Put the boolValue thing under a pcallfunction so if got error the script wont break

also im notsure if data stores can have qn marks so i js removed it and i also edited other stuff u can take a look

Datastores can only store up to 1 value. If you'd like to increase that number, use tables.

local ds = game:GetService("DataStoreService")
local bool = ds:GetDataStore("BoolSaving?")

game.Players.PlayerAdded:Connect(function(plr)

    local boolValue = Instance.new("BoolValue")
    boolValue.Parent = plr
    boolValue.Name = "BoolValue"

    local boolValue1 = Instance.new("BoolValue")
    boolValue1.Parent = plr
    boolValue1.Name = "BoolValue1"

    local data

    local success, err = pcall(function()
        data = bool:GetAsync(plr.UserId)
    end)

    if not success then
        warn(err)
        return
    end

    boolValue.Value = data.Value or false
    boolValue1.Value = data.Value1 or false
end)

game.Players.PlayerRemoving:Connect(function(plr)
    local data = {
        Value = plr.BoolValue.Value;
        Value1 = plr.BoolValue1.Value;
    }

    local success, err = pcall(function()
        bool:SetAsync(plr.UserId, data)
    end)

    if not success then
        warn(err)
    end
end)