There are no hard set rules, and it depends on what uses you have for the build number.
Making it a monotonically increasing number helps with versioning because it’s trivial to figure out which version is newer. Nevertheless, you can also rely on semantic versioning for that. It’s not like all projects are like Windows 10 and half a dozen major versions are pinned at 10.0.
You sound like you’re focusing on the wrong problem. You first need to figure it what is your versioning strategy,and from there you need to figure out if a build number plays any role on it.
There are no hard set rules, and it depends on what uses you have for the build number.
Making it a monotonically increasing number helps with versioning because it’s trivial to figure out which version is newer. Nevertheless, you can also rely on semantic versioning for that. It’s not like all projects are like Windows 10 and half a dozen major versions are pinned at 10.0.
You sound like you’re focusing on the wrong problem. You first need to figure it what is your versioning strategy,and from there you need to figure out if a build number plays any role on it.