Please pay attention: there is a serious difference between Google Developer account and Google account.
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 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.
Google Developer account allows you to publish apps on Google Play only.
You need it if you want to earn money from Android Apps.
Sign in form to Google account Google Play Console for Developer account
How to check if I created a Google Developer account?
To check if you register a Google Play Developer account go to this link: https://play.google.com/apps/publish/
If you can log in and can see the dashboard - then you succeed, you have a Developer account and you can publish your apps.
If you see this one:
It means that you had created only a regular Google account and still need to create a Developer account.
But if you see this screen:
It means that you had a Developer account but it has been banned by Google Play before. And you can’t restore it. You have to register a new Gmail account and then a new Google Play Developer account.