If you look inside the oven storage drawer, there should be screws right behind the handle on the inside you can unscrew to remove the handle. Are you trying to replace it or just remove it?
If for some reason the screws for the handle aren't on the inside of the drawer, try googling the make and model of the oven specifically.
Inside the draw there should be screws on the wall remove them
There may be small screws on the bottom of the handle if you don't have screws on the inside of the drawer.