magento2.4.1 – How to achieve set Google Business Reviews Authorization Bearer Token?

I am using Google Business Review API, every time i manually copy and paste the Bearer token, how to achieve this?,

My code :

<?php
namespace ZeroStorelocatorBlock;

class Customerreview extends MagentoFrameworkViewElementTemplate
{
public function __construct(
AmastyStorelocatorBlockviewAttributes $attributes,
MagentoFrameworkViewElementTemplateContext $context,
MagentoFrameworkAppConfigScopeConfigInterface $scopeConfig,
array $data = ()
) {
$this->_attributes = $attributes;
$this->scopeConfig = $scopeConfig;
parent::__construct($context, $data);
}

protected function _prepareLayout()
{
parent::_prepareLayout();

}

public function getCustomerReview(){

//Here you need to check system.xml file and get section_id/group_id/field_id
$authentication = $this->scopeConfig->getValue('customerreview/general/review_auth', MagentoStoreModelScopeInterface::SCOPE_STORE);

$accountId = $this->scopeConfig->getValue('customerreview/general/review_account_id', MagentoStoreModelScopeInterface::SCOPE_STORE);

$authorization = "Authorization:".$authentication;
$url = 'https://mybusiness.googleapis.com/v4/accounts/'.$accountId.'/locations/45545454545454545454545/reviews';

$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json' , $authorization ));
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
$output = curl_exec($ch);

$writer = new ZendLogWriterStream(BP . '/var/log/output.log');
$logger = new ZendLogLogger();
$logger->addWriter($writer);
$logger->info(print_r('line no:42'. $output, true));

$allData = json_decode($output, TRUE); // You will get all the data

return $allData;

}

public function getCustomAttributes()
{
if ($this->_attributes->getLocationAttributes()) {
return '';
}
return $this->_attributes->getLocationAttributes();
}
}