is your server windows or linux?
if windows and if you have wamp then you have to config a domain and export your construct project as html then put it in htdocs folder (C:\xampp\htdocs) (backup all other things in this folder then delete them)
if you want to have a front page and the game be like in this address "example.com/thegame/"
then you have to put construct export in a sub folder with the name of "thegame"