Hi Sagnik,
Please follow carefully the installation instruction readme.txt
to install the WHMCS template in a proper way.
(WHMCS Template included in “WHMCS” (folder) with installation instruction “readme.txt”)
If you are unable to install the WHMCS template with your own, then you need to hire someone else.
Moreover, please learn more our support policy (item support includes & not includes), here https://www.themelooks.com/support/support-policy/
Best Regards,
ThemeLooks Support Team