Get your tickets and join the fans at a game at Zerao Stadium. If there's nothing happening while you're in town, you might like to check if they offer a tour of the facilities.
When you've spent some time at this sporting facility in Macapa, why not check out Floriano Peixoto Square, Fortaleza de São José de Macapá, and Museu Sacaca? They're near Zerao Stadium and also popular with tourists.