Connect your HubSpot account using a Private App access token.
You need to be a Super Admin in HubSpot to create Private Apps. If you don't see the option, ask your HubSpot admin.
After creating the app, HubSpot will show your Access Token. It starts with pat-na1- (or a similar prefix depending on your data center).
Store this token securely. HubSpot will only show the full token once. If you lose it, you'll need to rotate the token from the Private App settings.