It's impossible to give an exact number, as new words are constantly being created and the meaning of existing words can evolve.
Here are some examples of homographs:
* Bat: A flying mammal and a piece of equipment used in baseball.
* Bow: To bend at the waist and a type of knot.
* Can: A metal container and to be able to.
* Fine: A payment for a crime and of high quality.
* Lead: A heavy metal and to guide.
These are just a few examples, and there are many more. To find more homographs, you can look up word lists online or in dictionaries.