how do you lot delete a google review?

after you report one, google has a reviews management tool where you can see whether the report is still being looked at, and appeal if they decided to leave it up. search for it by name, it's not easy to find from inside the profile. don't expect a quick answer though.

Depends whose review it is. Your own review: open Google Maps, tap your profile picture, go to your contributions or reviews, then the three dots on the review and Delete. You can edit it the same way if you just want to change it. Someone else's review on your business: you can't delete it. You can report it from your Business Profile if it breaks Google's policies, things like spam, fake reviews, off-topic rants or hate, and Google decides. A bad but genuine review won't come down, so the better move is a calm public reply. Other people read those replies more than you'd think.