For the availability and waiting period, we would suggest you to please connect with the nearest authorized dealer in your city as it depends on their stock book. Follow the link and select your desired city for dealership details.
It would be unfair to give a verdict here as the Tata Harrier 2023 is not launched yet. However, it is expected to be priced at INR 15.00 Lakh (Estimated Price in New Delhi).