Here is a quick snip showing the disk used of an average site on one of our US servers. There are sites using a lot less, our smallest site is under 1MB.
How Much space do I need for WordPress?
Please see the snip below showing the Softaculous installer requires 22.76MB to Install WordPress. You probably still need to load some images and your theme so you will use some more storage on that.
Basic calculation showing a standard HTML/PHP website resource requirements:
Please note, 2MB is quite large for a web page, we recommend keeping your pages as small in file size as possible to ensure fast loading and better use of your server resources.