Add score on right click

I'd like to add a score to the player's team when he/she right-clicks an item.but I'm having trouble adding the score to the scoreboard.What should I do?

Code:

public class PlayerInteract implements Listener{
    @EventHandler
public void onPlayerInteract(PlayerInteractEvent e){
    Player p = e.getPlayer();
     Material mat =p.getItemInHand().getType();
     if(e.getAction() == Action.RIGHT_CLICK_AIR || e.getAction() == Action.RIGHT_CLICK_BLOCK){
         if(mat == Material.RED_ROSE){
             Bukkit.broadcastMessage(ChatColor.RED + "You right clicked a rose.Plus 1!");
             if(mat == Material.BLAZE_POWDER){
                 Bukkit.broadcastMessage(ChatColor.RED + "You right clicked a blaze powder.Plus 1!");
                 if(mat == Material.CROPS){
                     Bukkit.broadcastMessage(ChatColor.RED + "You right clicked a crop.Plus 1!");
                     if(mat == Material.CLAY){
                         Bukkit.broadcastMessage(ChatColor.RED + "You right clicked clay.Plus 1!");
                         if(mat == Material.FEATHER){
                             Bukkit.broadcastMessage(ChatColor.RED + "You right clicked a feather.Plus 1!");
                             if(mat == Material.RED_MUSHROOM){
                                 Bukkit.broadcastMessage(ChatColor.RED + "You right clicked a red mushroom Plus1!");
                             }
                             if(mat == Material.EMERALD){
                                 Bukkit.broadcastMessage(ChatColor.RED + "You right clicked an emerald Plus 1!");
                             }
                         }
                     }
                 }
             }
         }
     }
         }
   
}

 

@S431

1. Get the player's scoreboard using player#getScoreboard()
2. Get all the teams, loop through them, and find the one with that player in it.
3. When you do, add +1 to the score.