How do I get all the resources after a helm.release?

Only the Release resource is stored in the Pulumi state; everything in the release is managed by Helm and stored by Helm on the cluster. This page has more details: https://www.pulumi.com/registry/packages/kubernetes/how-to-guides/choosing-the-right-helm-resource-for-your-use-case/

Thanks. seems like I am able to get the list of created services, in this case the associated loadBalancer, in a helm release through

_nginxRelease_.resourceNames['Service/v1'][0]

. I wonder what the easiest way is to grab the ipaddress of this service seeing as I have its name

You could try the Get method to query the resource: https://www.pulumi.com/docs/concepts/resources/get/