Laptop with Bitcoin?

My son passed 13 years ago. He was heavily into online activities. I know he had knowledge of Bitcoin but am not 1000% sure he had any. I have his laptop and can get in, but I don’t know how to look for wallets, etc. I tried checking his browsing history for anything related but 13 years ago had a different landscape and companies involved than today. I don’t even know what to look for. It’s also likely he used “Incognito” in Chrome for his browsing (he’s the one that put me in chrome all those years ago).

I’m not sure I even want to “get to the end of this mystery” as it keeps him alive in my own way. On the flip side, what he may have had could be worth a notable sum today.

If anyone has any ideas I’d love to hear and can share some of the details of the mystery as it unfolds. Passwords? That would be another story. He would make his girlfriend’s name and some date converted into binary code, sometimes backwards. So even if we find it we may never know if there is anything in it. ????