Require to convert Thunderbird in PST file, then only try one of the most reliable software that name is eSoftTools Thunderbird to Outlook converter, It has unique features that give an easy approach to user export Thunderbird to Outlook, This software can convert many Thunderbird profile in PST file without any alterations in sequence, styles, emails header, and email formatting of Thunderbird profile. The convert PST file of Thunderbird file in UNICODE form and its surely support by all variants of MS Outlook 2019, 2016, 2013, 2010, 2007, & 2003.
For more info:- Export Thunderbird to Outlook