CB Login custom links

How can I customize the 'Forgot Login?' and 'Sign up' links in CB Login?

Customize them in what way? Change their text? You can do that using language overrides as shown below.

www.joomlapolis.com/blog/kyle/18701-language-overrides-have-arrived

If you mean change their URLs there's no support for that. They go to whatever menu items you have setup for those URLs. If you mean add custom CSS classes to them you can do that under the Style Options tab of your CB Login Module.

As a side note CBs forgot login pages are deprecated. We advise just letting Joomla handle that. You can toggle Joomla forgot login behavior within CB > Configuration > General by setting "Forgot Login Method" to "Joomla".

going forward, my understanding is the Login and Forgot Login can be Joomla driven, but Signup must be CB driven since we are using CB Paid Subscriptions. Am i correct?

Login and registration should be CB while forgot login should be set to Joomla.

Our goal is eventually you'll use Joomla for everything as we'll enhance Joomla's profiles instead of completely replacing them since Joomla 5+ (maybe even 4) have added enough APIs for us to do this cleanly.