How do I make a ImageButton that when you click it, a model get spawned in front of the player?

So, first you should have the model you want to clone inside of game.ReplicatedStorage. Don't use lighting, since that isn't meant for storing stuff, obviously. You also shouldn't use ServerStorage, since we're going to be coding in a localscript.

First, create a "RemoteEvent" and put it in ReplicatedStorage. RemoteEvent is what's used to have the server communicate with the client. (and vise versa)

Next, put this in a ServerScript inside ServerScriptService (Never put normal scripts in workspace)

local model = game.ReplicatedStorage.name -- Change name to the model's name, please note that it can't have spaces in it.

function spawnModelForPlr(plr)
	local character = plr.Character
	local newModel = model:Clone()
	newModel.Parent = game.Workspace
	newModel:MoveTo((character.Head.CFrame * CFrame.new(0, 0, -10)).p)  -- this moves it 10 studs infront of the player.
end

game.ReplicatedStorage.RemoteEvent.OnServerEvent:connect(spawnModelForPlr)

Next, put a LocalScript inside of the TextButton you've created. Inside it, have this code:

local button = script.Parent -- if the script isn't inside of the textbutton, change the directory here

button.MouseButton1Click:connect(function()
	game.ReplicatedStorage.RemoteEvent:FireServer()
end)