Yes. Although some good movie torrent sites are blocked and don’t work in the country, most are legal to access. But even if a torrent site is available in India, downloading pirated movies will always violate copyright laws.
A VPN is important to protect your privacy and security every time you use the internet, including when downloading public domain movies. But I don’t condone using a VPN or torrent sites to break laws in India or elsewhere. If you do so, you risk being prosecuted.