You can find the list of Bitcoin Betting and Bitcoin Casino sites with Costa Rica online gaming license at this page.
Many authorities claim that Costa Rica does not offer iGaming License any more so it might be a fake license if the casino or betting site is claiming to have a Costa Rica license. Please check with the operator’s Live Chat before you make any deposit.
There is no such thing as a Costa Rica license but there is a thing called Cota Rica based online casino or sports betting websites. Local laws there allow companies to operate online gaming business without a specific license for it, as long as they follow all the regulations, pay their taxes and do not target local people.