@Wonderwoman49 you need to check with the Florida Secretary of State office. I don't know if you can retroactively dissolve the LLC. Additionally, I do not know if Florida would require you to establish a new single member LLC. Each state is different.
If you are able to do so, then "yes" you would be able to file a final federal form 1065 for 2020; and Florida partnership return.
Keep in mind, that you will not be able to use the LLC EIN going forward. Should you need an EIN for the SMLLC, you will need to obtain a new one.
Not sure a form 8822-B is necessary. Filing the Schedule C with your husband's name is essentially informing the IRS that this business is your husbands.
Also keep in mind that the partnership return is due 3/15. So you will clearly need to extend this return.
As noted in a previous comment, there are a number of federal issues that come into play when making liquidating distributions. It may be wise to consult with a tax professional.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
