have you any cb 1.9 version of this plugin?

Nope, we don't develop for or maintain CB 1.x anymore. I don't even have a CB 1.x developer environment setup anymore.

perfect!! it seems this works...

But only "Displayed User ID"

Displayed User ID: 695
Viewing User ID:

Viewing User ID will only work if you're logged in, but I've no idea how Sourcerer is running the code so that may or may not be affecting it. Being on CB 1.x could also be a reason it's not working as expected.

Is any way to display a tab only for a user group?

Yes, create a view access level for your group then set the tabs access to it.

but just I need this tab belongs to a user group

Navigate to Users > Access Levels. Click New. Select the checkbox for your usergroup. Click Save. Navigate to CB > Tab Management. Select your new Access Level for "Access Level" parameter. Click Save.

I'm using Sourcerer, as you know, and the never is empty at all.

You need to use both hide empty fields and hide empty tabs. You're using a Custom HTML field, which outputs a dash if empty unless you've hide empty fields enabled. Sourcerer could also be adding something to the output (e.g. even a space will cause it to not hide). Aside from that I don't know what more to advise as this is not the correct way to create a custom PHP tab.