How to get the accessKey to use in the Azure DevOps pipeline

I am trying to create a pipeline in azure devops to run the ready api tests. While configuring the pipeline, in the Authentication Method, I have chosen the Access Key. But I am not sure where to get the Access Key. We have procured Smart Bear ID based license and my official ID is having proper license. Could you please tell me which is referred to as the access key ? Is it the License Number ?