Did you buy a premium or free WHMCS Template? But don't know how to setup?

You are in the right place. I will install & Setup WHMCS Template as seen in the demo.

If you Purchased a WHMCS Template like "Flathost" from Themeforest, https://themeforest.net/item/flathost-responsive-hosting-template-with-whmcs/5043574

I'll install and setup the WHMCS Template. I'm the Developer & Designer of Best-Selling Flathost WHMCS Teemplate on Themeforest.