How do I contact google to ask whats been looked up on my pc?

[Nick]

Google is no an ISP, so there is no way they can look up your history. anyway, chances are, if there is a message saying that you've done something illegal, it's probably fake. Probably some Malware or some hacker trying to get some money out of you or just ruin your day. If you really did look up child porn then you would be in trouble in real life rest assured that, the government isn't just going to send you a friendly message.

to check your history in chrome which I'm assuming you're using because you asked to contact google, press Ctrl + H and just search through it. if someone used Incognito Mode to search up this porn, you have to call your ISP, like charter or ATT, not google, they can't do anything.