DEAR SIR,
A few months ago I found the domain OSCARPRIZE.COM was
unregistered but I did not register this domain that time. now it
has been registered by someone. now my question is that had I
missed the opportunity to earn something. OSCARPRIZE.COM has some value or not.

thanks.

Undeveloped it is worth no more than the registration fee.
You didn't miss out on anything.

Unless there is a well-developed web site with content covering the Oscars, the movie industry or something close to any of these, I don't see why anyone would want to associate their business name with "Oscar Prizes".

Agreed Art. Maybe a history of all the Oscar 'prizes', although they are pretty much all the same. id say thatd your best bet with your domain.

With image galleries, upcoming events, forum board, fans section etc... + a reliable host

but you need to put time in it in order to sell it for high money.