Tap/Click for Points

Hello. I'm extremely new to Unity and coding as a whole, and I'm making my first minigame. The game is just that you click or tap, and that's pretty much it. I need a counter so that with every click, it adds a point to the scoreboard. I also want the scoreboard to be displayed like this: 23/10,000. or like 2345/10,000. Basically, the number on the left is how many taps the player have already done, and the number on the right is their goal. Once the player reaches the goal, a different theme is unlocked. And also, the new goal is then changed to, lets say, 100,000. Would anybody help me with this? I'm extremely new and would love for somebody to help me out. Thanks. (Using c#)