You will probably have to remove IE from your system list. IE has been turned off. your system won't ever find it again.

Then you should be able to open the internet through whatever service you have, to a search bar

Then, from that search bar, you will need to download a browser that is something other then IE, like Chrome, Brave, or whatever MS is using these days.

Would have been a lot easier if you had done that when they told you to rather then waiting until they shut IE off.