Power automate flows with premium connectors to work under service account

Hello Techies,

I need some clarity on the licensing of Service Account to run power automate flows with premium connectors.

We are a team of two developers, planning to implement some flows with premium connectors.

As a best practice, I am looking to run these flows under a service account.

How many premium licenses would we need in this case?

Any insights provided would be highly appreciated!