The build limit in Minecraft refers to the maximum height and depth that players can build structures in the game. The build limit has changed over time with updates to the game, and it also varies between different editions of Minecraft. Here are the current build limits for different editions of Minecraft:

• Java Edition: As of Minecraft 1.18, the height limit is 319 blocks, and the lower limit is -64 blocks. The horizontal boundaries are tiered, but the maximum horizontal limit is around ±30,000,000 blocks.
• Bedrock Edition: The build limit is 320 blocks in the overworld as of Minecraft 1.18. In the Nether, the build limit is 128 blocks due to bedrock at the top of the Nether. There is no official information on the maximum horizontal limit in Bedrock Edition.

Its worth noting that players can use mods, datapacks, and commands to expand the build limits in Minecraft beyond the official limits. However, these modifications are not part of the vanilla game and may require additional setup or technical knowledge.