Google Account is for free and allows you to use Google services like Gmail, Google Photos, and others services, but it does not allow you to publish apps on Google Play.
Google Developer account is for charge $25 and allows you to publish apps on Google Play only. You need it if you want to earn money from Android Apps.
Google Play Developer account is necessary for publishing apps on Google Play store. Google Play Developer account based on regular Google account with Gmail. You can register only one Google Play Developer account for one Gmail account.
❗ There is no way to publish for free.
❗ There is no way to earn money from the app without a Developer account.
❗ You have to pay a fee $25 to Google to get an account. It’s a one-time payment
You can publish unlimited numbers of apps.
Sign in form to Google account Google Play Console for Developer account