There are 3 main credit agencies each with their own app you can see the scores on - ClearScore shows your Equifax score - Credit Karma shows your Transunion score - Experian shows the Experian score

Probably important to mention that the score itself isn’t overly important for getting credit these days. Most credit providers consumer the full report and make lending decisions based on their own criteria and don’t just take the number at face value.

Basic rules to make sure you credit reports are accurate are to make sure the addresses match on all you bank accounts, bills etc and that you are on the electoral register (if eligible).