There are a couple ways to connect to ADLS Gen2. Please refer to below doc. For instance, if you decide to go by service principal method, you need to add below storage account configurations details to the cluster or notebooks. Same goes for storage for SAS token and storage account keys.

service_credential = dbutils.secrets.get(scope="<scope>",key="<service-credential-key>")

spark.conf.set("fs.azure.account.auth.type.<storage-account>.dfs.core.windows.net", "OAuth")

spark.conf.set("fs.azure.account.oauth.provider.type.<storage-account>.dfs.core.windows.net", "org.apache.hadoop.fs.azurebfs.oauth2.ClientCredsTokenProvider")

spark.conf.set("fs.azure.account.oauth2.client.id.<storage-account>.dfs.core.windows.net", "<application-id>")

spark.conf.set("fs.azure.account.oauth2.client.secret.<storage-account>.dfs.core.windows.net", service_credential)

spark.conf.set("fs.azure.account.oauth2.client.endpoint.<storage-account>.dfs.core.windows.net", "https://login.microsoftonline.com/<directory-id>/oauth2/token")

https://learn.microsoft.com/en-us/azure/databricks/getting-started/connect-to-azure-storage

https://learn.microsoft.com/en-us/azure/databricks/storage/azure-storage