You can't set column level permissions in SharePoint.

1. There are ways to show and hide columns, but we can't set column level permissions in SP.
2. There are workarounds (hacks) to set permissions on Views, but it's not the column level permissions you are looking for.

You can't set column level permissions in SharePoint.

1. There are ways to show and hide columns, but we can't set column level permissions in SP.
   1.1: Creating a SharePoint View: https://support.microsoft.com/en-us/office/create-change-or-delete-a-view-of-a-list-or-library-27ae65b8-bc5b-4949-b29b-4ee87144a9c9
2. There are workarounds (hacks) to set permissions on Views, but it's not the column level permissions you are looking for.
   2.2: Example: https://www.netwoven.com/2016/01/21/how-to-set-view-level-permission-for-a-listlibrary-in-sharepoint/