How can we create a web page?

Answer 1

By using text editor

Answer 2

Start learning HTML ; CSS and JAVASCRIPT if you haven't yet and then using a text editor or some professional text editor for programming you can create a web page ;)

Answer 3

Google "free web hosting" - as you will need somewhere to actually host your page(s) if you want to get it on the web.
I use 000webhost.com. Not spent a penny/nickel/dime/cent yet. 👍