You didn't give us the entire clearance but if it is to the destination airport and calls out a STAR, that is part of your clearance and would remain part of it unless you were recleared.
If the STAR really has different routes depending on the landing runway, one would think that you would be recleared some time before you get there. After all when the original clearance is issued no one knows for certain what runway is going to be in use by the time you have gotten to the destination.
This is a separate issue from needing clearance to enter the TMA of the destination. In the US that is coordinated for you by ATC if you are on an IFR flight plan and you don't have to request it separately. If you are VFR, then you do have to be sure you do what is needed for the class of airspace before you enter.
In the US, I do not think I have encountered a STAR that is runway specific. You would fly the STAR until close to the airport and then be given vectors to join the approach for the active landing runway. You would know what that runway is, so you can set up for it, from the arrival ATIS that you got many miles out.
Isn't it best if you get instruction from someone in the country where you are, rather than relying on advice you get here. If you fly for an air carrier, I am confident that you have a chain of command that can get you that information.