i played a lil in bc and then non oficial servers.. is it worth picking it up gotta rebuy the game since i lost the acc so how is it ?

In my opinion, one of the best expansions they have done. Best one since WoTLK tbh

If the reason you are asking is because you have great memories of your experiences on tbc and want to recapture them, then the answer is no you should not play legion now

But if you are looking for a good game to play and heard that Legion is good and want to try something new, then yes you should play