Help needed with theme and softaculous

Hi, I’ve been struggling all day to find a way to add a theme called storefront from woo themes which is downloaded on to my computer to my new website which I have started by using wordpress via softaculous. The trouble I have is that I didn’t accept a preloaded theme at install and now I can’t add the compatible storefront theme. I keep reading I can find the appearance link on the left column and add it there under themes but this is not on my version. Please help as this is driving me insane, before I started it said it would take 5 minutes not 5 days! Have a great weekend Mick