Will WordPress website run in this cPanel hosting?

Of course, WordPress website will run very well. According to WordPress, this cPanel is the best hosting panel.

How many visitors can visit simultaneously in this plan?

In the 50GB, 100 visitors can visit simultaneously, in the 200 GB plan 150 visitors can visit simultaneously, and in the last plan, 300 GB plan, 250 visitors can visit simultaneously.

What needs to be done for protection from malware?

You don't need to do much for malware protection, this cpanel hosting has IMUNIFY 360 software to remove malware.

Can we host Node Js project in it?

Yes you host NodeJs project on this server, You also host Nodejs, Python, Rupby, Php and more Linux supported software.

If we need to upgrade this cpanel in future, can we do it?

This is Business cPanel, you can upgrade your cpanel anytime, above this you can upgrade as per need.

Where do I make changes to my DNS settings?

The Zone Editor feature (cPanel » Domains » Zone Editor) allows you to create, edit, and delete Domain Name System (DNS) zone records. DNS converts human-readable domain names (for example, example.com) to computer-readable IP addresses (for example, 192.0.0.1). DNS relies on zone records that exist on your server to map domain names to IP addresses.