Actually this is quite an easy one.
Your home page has no content. There is nothing for Google to chew on except the title tag. That is not enough. While the home page looks fantastic(!) (and it does by the way), search engines require content- at least enough to create a SERP link. In this case, you have not supplied the minimum for a SERP link.
You can take this in incremental stages. I suggest adding a description meta-tag at least to see if Google will at least create a SERP link for you. You can use the Google Search Console (application formerly know as Webmaster Tools [80's flashback anyone?]) and use Fetch as Google to refetch the page. This will happen right away, but may not hit the index for a while. Google will always revisit after the fetch with the Googlebot crawler a few hours or days and then index your home page properly.
If this is not enough, then I suggest some minimal content- an h1 tag and a paragraph. I rather suspect that just adding the description meta-tag should be enough. You may have to wait a while.
But know this. Because there is no content, the home page may never really rank for anything. Part of this is because your title tag is rather nondescript. I suggest at least making the title tag and description meta-tag the best they can be.
view-source:http://suleimanholdings.com/
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view-source:http://suleimanholdings.com/about
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This is what I see when I visit your site and do a view source for what it is worth. When you are done, I, or anyone, can edit these out for you.