UNUserNotificationCenter *notificaitnCenter = [UNUserNotificationCenter currentNotificationCenter];
    [notificaitnCenter requestAuthorizationWithOptions:UNAuthorizationOptionBadge | UNAuthorizationOptionAlert | UNAuthorizationOptionSound | UNAuthorizationOptionProvidesAppNotificationSettings completionHandler:^(BOOL granted, NSError * _Nullable error) {
        if (granted) {
            dispatch_async(dispatch_get_main_queue(), ^{
                [[UIApplication sharedApplication] registerForRemoteNotifications];
            });
        }
    }];
After implementing this snippet of code also i am unble to see the Notification settings option.