how do you edit wrong data entered in Health app?

Ah, I must have misunderstood you. If you are trying to edit weight data that you already input, go to where you would normally input your weight. It should say "weight" at the top. If you scroll to the bottom, there should be an option to "show all data". Click on that. It should now say "all recorded data" at the top. Now click on "edit" on the top right, and remove the incorrect data. I do not believe there is any way to edit this data, only remove it. Hope this helps!

Open the Health app on your device, and click on your Apple ID profile picture in the top right hand corner. From there, you can click on "Health Profile" and you should be able to edit your data.