To get started with MLOps extension for Azure DevOps, go to https://aka.ms/mlops.
The config folder contains two files that will be useful for you to get started.
azure-pipelines.yml - definition of an Azure build pipeline
config_sample.json - configuration and credentials for working with aml compute
After you filled in all the empty quotes in the config_sample.json file, save it under e.g. <your_name>_config.json.
Then go into azure-pipelines.yml, and make sure that you change the name of the config.json to whatever you picked here.