So, how do you actually build an Xp farm? It's pretty straightforward. You'll need to create a mob spawning area, a killing chamber, and a collection system. Don't worry if that sounds confusing - just think of it like a little mob factory that produces experience points!
You can use water to push the mobs towards the killing chamber, and lava to, well, kill them. It's a pretty clever system, and it's amazing how much Xp you can earn with just a little bit of planning.
How To Make A Easy Xp Farm In Minecraft 1.17 Bedrock at John Font blog
One of the coolest things about Xp farms is that you can scale them up or scale them down depending on your needs. Want to earn a ton of Xp quickly? Just add more mob spawners! Want to keep things simple? Just stick with a single spawner and enjoy the slow and steady Xp gains.