The 1.4 beta is finished, right? Because my steam still says fallout 4 [beta] and there's no beta tab in the properties so I can't opt out. Is something wrong? Will it be a problem when the next beta/update comes?

It says version 1.4.132.0 in properties of the exe.

Yes, that's the version on Fallout 4 .

When the next beta hits steam, there will be a tab for opt-in. So don't worry about that.