After all water in teapot was boiled, an empty teapot was left on the surface and stove was turned on. You can see the spot on the photo. Is there some ways to fix or clean this?
Induction hob model BOSCH PIB673F17E.
It depends what the 'stain' is. If it's just surface deposits from the bottom of the 'teapot' (kettle?) transferred to the stove top, use a recommended proprietary cleaner (depends what country you are from what is available, ask at a hardware store for ceramic hob cleaner or induction hob cleaner). If it's in the bulk of the stove top caused by heat damage to the thickness of the material, you have two choices... live with it or replace the top. You won't be able to polish out the stain as it goes through the thickness.
Side note, that's probably why many induction hobs are black or very dark... harder to spot if there is any discolouration caused by getting a pan way too hot.
If the stain is persistent, do the following:
One time I had to do this twice to get the stain off.