Hi @sagarsk2 ,
If your Databricks account has the Premium plan or above, you can use Workspace access control to control who has access to a notebook. The same applies for secrets and other assets, you just need to setup correct ACL for given securable object:
Access control lists | Databricks on AWS
So what you need to do is to contact your workspace admin and ask him to configure proper set of permission for your account.
PS. Access to system tables is governed by Unity Catalog. No user has access to these system schemas by default. To grant access, a user that is both a metastore admin and an account admin must grant USE and SELECT permissions on the system schemas.