What do mean by page rule?

I have recently created an account on Cloudflare but I don’t know how to use page rule for speed optimize. help me

my site:- job for govt

You can start with the Speed section of the Cloudflare Dashboard. It will let you run a speed test and give you some suggestions.

Other than your home page HTML, which isn’t that slow, there are a lot of third party resources, such as Google Fonts, that are slowing down your site. Cloudflare can’t help with those, but you can host your own Google Fonts:
https://google-webfonts-helper.herokuapp.com/fonts