jumping by text button wont work?

local button = script.Parent
local Player = game.Players.LocalPlayer
local Character = Player.Character or Player.CharacterAdded:Wait()
local Humanoid = Character:WaitForChild("Humanoid")

button.MouseButton1Click:Connect(function()
	Humanoid.Jump = true
end)

Your issue, based on what you said in your comments, is that you're jumping the player via LocalScript. You need to fire a RemoteEvent to the server and have the player jump server-side.

The script you already have, your LocalScript should look something like this:

local button = script.Parent
local LocalPlayer = game.Players.LocalPlayer

local remote = Instance.new("RemoteEvent")
remote.Name = "Jump"
remote.Parent = game.ReplicatedStorage

button.MouseButton1Click:Connect(function()
	remote:FireServer(LocalPlayer) -- We're sending the player to the server, so the server knows who to jump.
end)

Then, you want a server script looking something like this to make it happen:

local remote = game.ReplicatedStorage:WaitForChild("Jump")

remote.OnServerEvent:Connect(function(playerToJump)
	playerToJump.Character:FindFirstChildOfClass("Humanoid").Jump = true
end)

In summary, your LocalScript tells the server when the player presses the button. Your regular script (server script) actually makes the jump happen.