All the things that need to be done (disolving multi-member LLC, transfering the property assets out of that multi-member LLC to the new owner, and much more) are really beyond the scope of this public user to user forum. You need to seek professional help yesterday, if not sooner. How you handle this depends on your state and the laws of that state which govern not only dissolution of a business, but the distribution of assets from that business when one of the partner's/owner's is deceased.
Please seek professional help for this, for at least the 2022 tax year.
