How do you make an e system with FE? (When you press e, you should blow up a vault)

I am working on a game, similar to Jailbreak, with no police. I am making a bank. You press "e" to blow up the vault. I'm not sure if I have to use a remote event or a remote function.

Here are the two scripts: 1 (Local Script)

local userInputService = game:GetService("UserInputService")
local bar = script.Parent.Bar3

game.ReplicatedStorage.EGuiEvents.EGui2.EnableEGui.OnClientEvent:Connect(function()
    if workspace.Vault.Base.CanCollide == true then
        script.Parent.Visible = true
    end
end)

userInputService.InputBegan:Connect(function(i, g)
    if script.Parent.Visible == true then
        if i.UserInputType == Enum.UserInputType.Keyboard then
            if i.KeyCode == Enum.KeyCode.E then
                if workspace.Vault.Base.CanCollide == true then
                    bar:TweenSize(UDim2.new(0, 70,0, 5), "Out", "Linear", 5)
                    wait(5)
                    if bar.Size == UDim2.new(0, 70,0, 5) then
                        bar.Size = UDim2.new(0, 1,0, 5)

                        script.Parent.Visible = false

                        local humanoid = workspace[game.Players.LocalPlayer.Name].Humanoid
                        local anim = humanoid:LoadAnimation(script.Animovement)
                        anim:Play()

                        script:WaitForChild("Script").Disabled = false
                        script:WaitForChild("Script").Parent = workspace.Bomb

                        repeat wait(1) until workspace.RobberyInProg == false
                        spawn(function()
                            workspace.Bomb:WaitForChild("Script")

                            workspace.Bomb.Script.Parent = script
                            script:WaitForChild("Script")

                            script.Script.Disabled = true
                        end)
                    end
                end
            end
        end
    end
end)

Script 2 (Sever Script)

player = game.Players:GetPlayerFromCharacter(workspace:FindFirstChild(player.Name))
if player then
    repeat wait(1) until script.Parent == workspace
    script.Parent.Bomb1.CanCollide = true
    script.Parent.Bomb1.Transparency = 0

    wait(3.2)

    script.Parent.Bomb2.CanCollide = true
    script.Parent.Bomb2.Transparency = 0

    wait(3.2)

    script.Parent.Bomb3.CanCollide = true
    script.Parent.Bomb3.Transparency = 0

    wait(4)

    script.Sound:Play()

    for i,v in pairs(script.Parent:GetChildren()) do
        if v:IsA("UnionOperation") then
            v.CanCollide = false
            v.Transparency = 1
        end
    end
    workspace.Vault.Base.Transparency = 1
    workspace.Vault.Base.CanCollide = false

    repeat
        wait()
    until workspace.RobberyInProg == false

    script.Parent = game.ReplicatedStorage

    workspace.Vault.Base.Transparency = 0
    workspace.Vault.Base.CanCollide = false
end

Any help?