I try to use example \"Read multiple ranges\":
https://sheets.googleapis.com/v4/spreadsheets/{SpreadsheetID}/values:batchGet?ranges=Sheet1!B:B&ran
You have to make sure to pass in the key=YOUR_API_KEY as the request parameter. For example:
https://sheets.googleapis.com/v4/spreadsheets/{sheet_id}/values/Sheet1!A1:D5?key={YOUR_API_KEY}