Hello Maryna Paluyanava,
ADF has a native Hubspot connector. You can reference the below document for more details.
from the below hubsport community forum, HubSpot APIs support OAuth/Hapikey. The OAuth authentication request an access token to authenticate the application on a particular portal ID.
https://community.hubspot.com/t5/APIs-Integrations/Oauth-2-client-credentials/m-p/341256
https://learn.microsoft.com/en-us/azure/data-factory/connector-rest?tabs=data-factory
I hope this helps.