How can I remove the name, from the application of this place, thank you very much for your help ...
The title of the current page can be changed in the Title property, as well as the icon (Icon property) associated.
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="Demo.MainPage"
Title="Titulo de tu Preferencia" Icon="DefaultIcon.png">
Likewise, I recommend changing the application name (Application Name), you can access it through the properties of the project.