You are allowed to use the template for any number of projects and for any number of clients.
You can sell a unique website design that's based on a Zerocodegirl template to a client. But you cannot redistribute, resell, or license a unique website design that's based on a Zerocodegirl template.
What you can't do
You can't redistribute, resell, lease, license, sub-license or offer a Zerocodegirl templates as-is or any individual component of the template to any third party or marketplace.
Ownership
Zerocodegirl retains ownership of the template but grants you the license on the the terms above.
If a breach in this license is discovered, Zerocodegirl may take legal action. Webflow may also take administrative action such as closing your account.