Can't play the game because you only uploaded the .exe file which is the file that starts Unity Engine. That file doesn't contain any data from your game. There's a reason Unity created other files than that .exe in your build folder. Everything related to your game is in folder called "Sunburn Safety Squad_Data", but you didn't upload that folder, that's why nobody can play your game. You have to pack all your files from the build folder into something like .ZIP or .RAR archive and upload that not the .exe file