There is a lizard in the house how do you get the lizard out of your house?

Pick it up and put it outside. Or leave a window open so it goes out by itself.

Is it a lizard that lives inside? In many countries there are house lizards that are harmless to you, but eat flies and mosquitoes. They can walk on the walls and ceilings. It it is one of those, then don't worry about it.