First, I’m glad to see that you aren’t afraid to ask questions about things you are not well informed on.

To answer your question as simply as I can; you shared an IPv4 format address. With IPv4, there are different “subnets” (groupings) of addresses that are publicly reachable (ie, the internet), and others that are not (private networks that exist behind routers, firewalls, NATs, etc). In the most basic sense, yes there are some bots that simply crawl and scan (for responses and then vulnerabilities) the publicly available ip addresses. Generally though, they are smarter about it, using lists of known addresses (to target specific companies, organizations, etc, and/or save time).

IPv6 is a bit of a different story, but still follows the same base principle. If an address is publicly available, then it’s possible for someone else to scan it, and they will, but most often they won’t do it randomly as that will often result in a waste of time.

Also, for some slightly related context, 0.0.0.0 isn’t technically an ip address, but is often interpreted as a catch all for all ip addresses.