The Business Profile Performance API allows merchants to fetch performance reports about their business profile on Google. Note - If you have a quota of 0 after enabling the API, please request for GBP API access.
curl \
https://businessprofileperformance.googleapis.com/v1/{name}:getDailyMetricsTimeSeriescurl \
https://businessprofileperformance.googleapis.com/v1/{location}:fetchMultiDailyMetricsTimeSeriescurl \
https://businessprofileperformance.googleapis.com/v1/{parent}/searchkeywords/impressions/monthly