If you think the email is targeted and accurate:
I don't think it is possible to go through someone's system with visiting a website or a video, If you have downloaded and ran any file or if your browser is too old then it is possible that the hacker reached to your system and after that anything is possible.
Is there any specific info related to you in the email?
Email
,password
,Ip/location
,Web Browser
version, yourOS
yourmonitor model
and ... is considered normal, But getting webcam and recording don't seems real and possible.
If you don't know what is this email talking about the possible action could be:
If you think this is a spam email which is sent for a thousand innocent person sothen Flagging and Reporting and Deleting will make his job harder next time. Because the sender will be blacklisted, His tools will get flagged and suspended and a lot more trouble. The impact is small but maybe it help other people on the spam attack.
Analyzing email's header can expose some information about the sender, like ip, The tools he is using or ... . Which is a very technical thing. But with considering the sender uses temporary tools, These info's will not help.
The hacker can see if you opened, Read and readclicked and waited on the email, So better to not opening these email next time.
You have the upper hand here, With 2 Step Verification, Back up email or any possible waymethod you can change your system and email's password if you think it is at risk.
Finally Ignorance is the best solution, I receive 10's of this every day. Mass spamming is a ordinary thing for a hacker, When when millions of emails are out there for free.