There is a multitude of examples available demonstratating how read webpages and extract data from them.
Maybe you have a look at
If you share some more details (e.g. the webpage and what data you would like to read) the community might give you some more specific hints.
What’s the reason to put the data into xls files?
For purposes like data storage or visualisation you could also make use of KNIME and it’s power tool landscape.
