If you have a current BRP expiring on 31 December 2024, you should be able to create a UKVI eVisa account now to view your eVisa if you have not already. You must do this before the 31 December 2024 and we recommend doing this as soon as possible. Please see this link for more information.
Note that you should retain your BRP until the end of 2024 once you have your eVisa as you may require it for travel purposes.