How to download a website using WGET?

I’m not sure if anyone on this forum can help me.

Is it a ridiculous idea for you all to show me the steps to download a website that requires a username and password, I currently have?

https://app.pushbuttonautomarketer.com/site/login.phtml

The problem is I am new to web scraping and its coding. After spending many hours trying to make sense of what I am doing, I only reached past the installation process in cmd.

What do you suggest I do to move forward?

Thanks in advance

Cheers