The sender of the email requires a sum of money – usually about $4000, but the amount may vary. Of course the payment is in Bitcoin.
The email threatens physical harm and assassination.
In the first weeks before the blackmail campaign began, the attacker managed to rake in about $50,000 a week.
Do not pay, do not answer
Just delete
More details at the link
https://www.bleepingcomputer.com/news/security/new-extortion-email-threatens-to-send-a-hitman-unless-you-pay-4k/