Yes, you can set one home per world. If you move, or wish to make a new home, you can reset your home. However, this will cause your old /home to become invalid.
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How do I find my home?
Make sure you’re in the right world when you type /home to get back to your house.
In addition, you can type /where to help find your home.
How do I set a home?
You can set your home with /sethome. Make sure to type it where you want your home to be. Be careful of where you are standing when you type /sethome. because this is the spot where you spawn when you use the /home command. If you are in the air when you set your home, (using /sethome), you will appear in the air when you use /home. If flying is not enabled, you could fall causing you to die. It’s important to remember where your home is as well.