I would need help with writing part of my master’s thesis. intro and theoretical

I would need help with writing part of my master’s thesis. intro and theoretical background mainly, then I would cover a middle chapter explaining the simulation itself (spreadsheet with a model applying data analytics), and I would then need help with the results, discussion and conclusions chapters. Ideally, I would like to discuss with you the usual length of what I have in mind, so we can modify the quote to meet my expectations in therms of what I want to cover, and how many pages would be needed.