How do I increase an integer variable from another blueprint?

[ContinentalChamp]

So I’m making a game where the player throws different items to different shelving units, and each time they do that, I want to increase their score. Since each shelving unit is a different blueprint, how do I do this? Please explain in simple terms, I’m not experienced.

[ClockworkOcean]

HTF do I? Blueprint to Blueprint Communication