Databricks

how can I download the run and event logs? spark UI is loading them from somewhere but I couldn't find them in dbfs nor on s3

I'm trying to use the API of billable usage and I do get a report but I have not been able to get the usd cost report, only the dbuHours. I guess I've to change the meter_name but I cannot find the key for that parameter anywhere

I'm creating a series of runs using the /api/2.1/jobs/runs/submit, I wanted to add some tags for more control on the cost and usage, but I notice it's not an option. My first idea was using /api/2.1/jobs/update but it returns that it doesn't have any...