You got a wrong character in the where clause
where ListName = ‘Whitepaper_Download_Test'
Should be
where ListName = 'Whitepaper_Download_Test'
and after the l.timeStamp, should not be a comma.
==>
Select
l.EmailAddress,
l.First_Name,
l.Last_Name,
l.Company,
l.Phone,
l.userIp,
l.disclaimerTerms,
l.timeStamp
from [_ListSubscribers] l
where ListName = 'Whitepaper_Download_Test'
Let us assume you have the List Whitepaper_Download_Test and a dataextension B that has these fields: Email,First,Last,Comp,Phone,Ip,Terms,Time. (I changed to different fields that you get the point).
Select
l.EmailAddress AS Email,
l.First_Name AS First,
l.Last_Name AS Last,
l.Company AS Comp,
l.Phone AS Phone,
l.userIp AS Ip,
l.disclaimerTerms AS Terms,
l.timeStamp AS Time
from [_ListSubscribers] l
where ListName = 'Whitepaper_Download_Test'
Target Data Extension is B.
But i believe that doesnt fix your First_Name error. Are you sure it is in the List? Can you make a Screenshot of the Fields in that List(no values please)?
Just for reference: Here is the description of _ListSubscribers https://help.salesforce.com/articleView?id=mc_as_data_view_listsubscribers.htm&type=5