I’ve done this on a Toyota, likely similar to Honda. If you don’t have an impact gun, you can still remove the pulley using a socket wrench, but you need a special tool to hold the pulley in place. Otherwise the pulley will turn as you turn the center bolt, preventing you from removing the center bolt. You can buy the pulley holding tool at most auto repair shops. Being a cheapskate, I made one myself out of a piece of plywood. Look carefully for some pins or holes in the pulley. You just need something that matches up to those and long enough so it sits against something solid nearby to stop the pulley from turning. Once you get the pulley held tight using your tool, you can undo and remove the center bolt.
Next you have to pull the pulley off. Sometimes you can do this by hand, but usually they are rusted on so tight you need a pulley puller. Don’t force it, you can damage not only your hands, but the pulley. I always use the pulley puller tooler, that’s the most simple way. This is a tool you definitely need if you plan to do your own auto-repairs, and should buy from an auto parts store if you don’t have one already. I use mine frequently. Not very expensive. Be sure to completely remove the center bolt first – otherwise you can damage the pulley – then bit by bit back the pulley out with the puller. Good luck. And be very careful anytime working on and especially under cars. Safety is more important than how long it takes.