Gameobjects do not appear in the built game

I am New in unity. I start the first Learning project roll a ball I complete it without problems but after building it and opening the built game all the gameobjects aren't appearing but the count text count appear and increase when I keep moving which mean the pick ups the player and the background are there but they don't appear when I test the game in the editor everything appear normally but in the built game everything don't appear please help