Hi,
I'm going to be honest here and sadly say that I don't believe your domain doesn't have any value at this point. The "Visitabudhabi" part is excellent but the ".app" part is what really detracts this domain from being a great domain. It was a nice idea and if you could get something like a ".org" or ".net" then I believe there is some money to be made.
Cheers,
Mark Lancer