Yes. In fact, 3 different scores is far more common than matching scores. Each agency gets separate reports and almost always have slightly different information. Therefore, getting exactly matching scores is quite uncommon.
Consumers don't report their own credit history to credit reporting agencies - Lenders do. However, you can file a consumer alert with each of the agencies that will put your statement on file.
There are very many countries with credit reporting agencies. Credit agencies use them to receive their data quickly. If there is a credit agency in any particular country then more than likely there...
Credit reporting agencies keep files of information on all consumers who have made credit transactions at some point in their lives. Credit granting institutions may purchase these files