The Venus plan (and all the VPS plans) can easily handle 1 or many WordPress sites. All VPS plans come with unlimited bandwidth, which means there is no limit or cap on the total number of daily hits that your VPS websites can get. If your WP site on our VPS becomes very popular and you get a large amount of daily visitors, our VPS can handle that just fine.
Of course, you will want to make sure you have anti-spam and anti-bot attack protection on your WP install, even on a VPS. You may be aware of the risk that comes with using WP on our shared hosting, since WP is bloated software and can often get attacked by bots (which then causes the account load to get too high, and results in account suspension). The same risk of bot attacks exists when WP is installed onto a VPS, but the difference is that if this happens on a VPS, the load does not impact our other users. We'd still recommend making sure you have WP security plugins installed, so that bots cannot repeatedly attack your VPS WordPress site and risk slowing it down for your website visitors.
Please note that a VPS is basically a machine with an OS installed, so if you're not comfortable with the command line, you can request that we install a free dashboard onto the VPS for you when it is created. Popular free dashboards are Hestia and KeyHelp. Since you mention WordPress, Hestia offers a straightforward "one-click install" feature for WP (that you can read more about here), that may be helpful for you.