Share sheet allows you to share your content to any app in general. What ever apps that support to share your content will be shown to the user and user can select the service he/she wants to share on.
Share text
ShareSheet shareSheet = ShareSheet.CreateInstance();
shareSheet.AddText("Text");
shareSheet.SetCompletionCallback((result, error) => {
Debug.Log("Share Sheet was closed. Result code: " + result.ResultCode);
});
shareSheet.Show();