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whatsup
if you are on WP you are entitled to a shengen visa from any european country
now your question is about the length of the shengen visa? thats depends the reason of the visit in your application you have to mention the reason of the visit, so whoever is assessing the application will decide which category of the shengen he needs to stamp on your passport
fingers cross you get few months visa , don t forget as a WP holder if you are planning in the future to apply for permanant residence ILR or the probabtionary citizenship which will be introduced in few months by law you shouldn t exceed long period of time outside of the UK it s all going to be calculated and added up
good luck