Change local players speed

[Kyozoa]

Am I able to use a remote event to change a local player’s speed while the rest of the servers players are left alone?

[Brick_man]

Yes.

client (inside of a Text/ImageButton):

local remote = game:GetService("ReplicatedStorage"):WaitForChild("SpeedRemote")

local button = script.Parent
button.MouseButton1Click:Connect(function()
     remote:FireServer()
end)

server ( inside ServerScriptService):

local remote = game:GetService("ReplicatedStorage").SpeedRemote

remote.OnServerEvent:Connect(function(player)
     player.Character.Humanoid.WalkSpeed = 32
end)

put a RemoteEvent called “SpeedRemote” in ReplicatedStorage.