My command helm list is failing with the message:

Error: configmaps is forbidden: User "system:serviceaccount:kube-system:default" cannot list configmaps in the namespace "kube-system"

And I found some results that tell me how to set up RBAC roles and rolebindings, like for example:

helm list : cannot list configmaps in the namespace "kube-system"

and

https://docs.bitnami.com/kubernetes/how-to/configure-rbac-in-your-kubernetes-cluster/

but these fail for me as well with this error:

Error from server (Forbidden): error when creating "tiller-clusterrolebinding.yaml": clusterrolebindings.rbac.authorization.k8s.io is forbidden: User "$USER" cannot create clusterrolebindings.rbac.authorization.k8s.io at the cluster scope: Required "container.clusterRoleBindings.create" permission.

Now after some searching I found this answer:

Cannot create clusterrolebinding on fresh GKE cluster

Which gives this error:

ERROR: (gcloud.projects.add-iam-policy-binding) User [$USER] does not have permission to access project [$PROJECT:setIamPolicy] (or it may not exist): The caller does not have permission

This last error finally seems to give me a good tip, I seem to not be an administrator/owner of this project, so I'm asking the owner of the project if he can give me those permissions. He's non-technical, so he'll have to do it through the GUI.