How do I install WordPress

ok so i deleted simple scripts……i went through the cPanel instructions on how to set up wordpress. I get tripped up right here (and i dont know why because its so straight forward) https://www.tamba2.org.uk/wordpress/cpanel/
Run installation
Upload all the WordPress files, including the file above, to the directory where you want it to be.
It doesn’t have to be called anything in particular – your choice.
Let’s say I uploaded the files to a directory called ‘blog’ – I would then use my browser to go to
https://www.example.com/blog/wp-admin/install.php
and then you’ll see this screen:

Thats what it says – I dont get the upload part…..my stuff is already downloaded and extracted to the folders the instructions said to put them in – now what am i missing? lol