Hello Serge,
Thank you for reaching out. The API quota and usage is visible on the developer console (Google Ads API console) if the Google Ads API is enabled for your project. Could you please verify this on your end using this guide to check if the API is enabled? You can also use your app's activity logs to get an estimate of your AdWords API usage. For your concern related to whether your account has basic or standard access, you could verify this on your end by navigating to Tools & Settings > API Center while logged in as manager. If you are having any difficulty, please share the MCC Id for me to take a look and assist you further.
Regards,
Nikisha Patel, Google Ads API Team