Linking a website to an excel file

Hello to everyone! I want to start a website. One section is a stock exchange system. People can buy and sell shares but for this I would need a link between the website and the accounting excel file on my comp. How is it possible to do that?

Thank you for your help!

Hi Emilian,
Sounds pretty complex, My suggestion is to ask specific questions in order to get answers.
You can use fetch method in order post requests from Google sheets rest api .
Good luck!
Roi.