Which bundle should I bought only for torrenting?

I just want the VPN service for torrenting, I am not sure should I get VPN Plus or VPN Unlimited

Plus is plenty already. Unlimited is good IF you’re also use other services of Proton like Mail, Drive or other stuff.

VPN Plus should be good

Unlimited wouldn’t give you anything useful for torrenting that doesn’t come with VPN Plus.

For Linux ISOs - VPN Plus - with all features enabled ! Preferably within a protected VM. For additional fun

There is no Proton VPN Unlimited. Proton Unlimited is a bundle of the paid versions of Proton VPN + Proton Mail + Proton Pass + Proton Drive and now also Proton Wallet and the Dark Web Monitoring. It’s a good deal for only $3 a month more if you’d actually use any of the other bits, but it doesn’t give you any more VPN features that VPN Plus already has.

THIS^ > everything you need is in Plus plan