Ask IH: Is there any service/product which can extract the text from images and paste it in word file or txt file?

You probably already found one, but if not, here is a quick free service:
https://products.aspose.app/ocr/image/image-to-text

If OCR does not work, there are some deep learning algorithms for this task. No service, though. What is the use case? Which kind of images?

Yes, they are called online OCR. Can't recommend one in particular but the first results on Google should do it.