@Amy1117 There's not a specific requirement pertaining to how much of your personal items can be in the home, and the listing editor has a feature where you can disclose whether guest areas contain your personal effects.
There are some things that I would definitely discourage either removing or securely locking up: important documents, firearms, prescription drugs, alcohol, items of significant monetary or sentimental value, and anything else you wouldn't want a snoopy guest to stumble upon or use.
You don't have to empty all your closets, but guests should have a designated place to store an amount of clothes appropriate to the length of stay. If you offer kitchen access, it's best to remove anything perishable and make it very clear which items guests are permitted to use.