You can get a command block in your Minecraft Java or Bedrock world using cheats and a special chat command.

Players interested in automating their commands in Minecraft will have to use Command Blocks, but they’ll need to update their settings to add them into the game.

As its name, you can obtain a command block through commands. Make sense, right? There are 2 commands you can type in the chat (press T or Enter) to get a command block: /give @s minecraft:command ...

Minecraft's command blocks allow players to automate console commands, but they are hard to find, so this guide shows how to get them.