How to add "Level 1" and make it disappear, in the beginning of the game?

As same as in Title… how to make in the beginning “Level 1” then wait like 2 seconds then disappear … as same as Level 2 … 3 so on.
Any Idea?

Edit : I mean in the beginning of the Level(Any Level 1,2,3 , etc…) it says what level is this… Just appears in the begin of the level and then disappear.

you can simply use a ui text and change the text every second. Use float value -= Time.deltaTime and chance the text if the float value is <= 1, 2, 3 … with YourText.text = “3, 2, 1 …”.