Easy-peasy. I'm super quick.
1 day for branding(colors, fonts, logos etc) and 2 days for whole landing page. 

Landing page can be designed in Tailwind css or Webflow. 
Tailwind will be better for those who can code or has a developer in team.
Webflow will work great for those who just want a fancy site without worrying about any coding.

These are some of the design that's available and shipped.
Those design was great but wasn't shipped makes me sad so I'm not putting here.