The chances of a specific police investigation into this e-mail are low.
If you stop to think about what offences were committed where and by whom, it's a pretty hopeless task to bring a prosecution. The immediate perpetrator is likely to be in Nigeria, probably using an unregistered pre-pay SIM - but that perpetrator could be an innocent user whose machine has been joined to a botnet.
Nevertheless, the
advice in Trisha's reply is well worth following. Action against this sort of e-mail requires an intelligence led approach by the authorities, and anything you can do to help them build up that intelligence is worthwhile.