Need assistance please for my website!

Oct 3, 2018
I recently had an independent amazon affiliate guy build me a website. However, I was unaware that its possible and wouldnt think that a guy who has made millions would know to implement meta tags and make the site searchable to others? Whats going on? Is this a scam or am I being paranoid?

Basically I was told if I put this: /robots.txt after my site URL (ex. www . titan - profits . com/robots.txt), I should get this message:
(Allowing all web crawlers access to all content)
User-agent: *
For my site I got the message:

User-agent: *
Disallow: /wp-admin/
Allow: /wp-admin/admin-ajax.php

Does everything seem legit that there wasnt anything manipulative done to my site that was created, after that robot txt test was done?

Thank you!