Yes, it is generally recommended to get the first service of your Yamaha FZS V3 done either at 1000 kilometers or within 1 month, whichever comes first. In your case, if you have only ridden 200 kilometers within the first month, it is still a good idea to get the first service done.
The first service is important as it allows the dealership or service center to inspect your motorcycle, make any necessary adjustments, and ensure that everything is functioning correctly. Even if you haven't reached the recommended 1000 kilometers, the first service can still be beneficial in identifying any potential issues early on and addressing them to maintain the performance and longevity of your motorcycle.
It's always a good practice to follow the manufacturer's recommendations for servicing your vehicle to ensure it remains in optimal condition. Therefore, it is advisable to take your Yamaha FZS V3 for its first service even if you haven't reached the recommended mileage but have exceeded the first month.