Hi Barking_Mad1,
If I get your question correctly referencing the Email property of that column will do the trick.
In my setup I have a table with trainings where the column "Trainer" is a "person or group" type. The structure looks like below.

So, to use it in E-mail CC field you can:
1. Scenario - you want only the first user in the Person field - you nest everything in 1 Apply to each and use the first() method

Value in "Apply to each" is:
outputs('Get_items')?['body/value']
Value in "Send e-mail" CC is:
first(item()?['Trainer'])?['Email']
2. Scenario - you want to send e-mail to all the users in the person column, CC-ed in a single e-mail.
Using Select to extract the e-mails as below:

Select From:
items('Apply_to_each')?['Trainer']
Select Map:
item()?['Email']
CC field:
join(body('Select'),';')
Hope this helps!
If I was able to answer your question, please consider marking it with "Accept solution" so other platform users can benefit from it. Thanks!