5-10 million leads For each country

So basically I have millions of business leads and don't know what to do, my leads consist of emails, phone number, company name, description, country, street address, postal code, with so many categories, each country has 5-10 millions listing namely UK, US, AU, CA, and many more. So what can I do to convert this to cash, I am planning to sell it online but don't know what to do?