Can one person be Torah Bride and Breishis Bride in one congregation on Simchat Torah same day? Also Maftir bride?
This is theoretically possible, but it is not correct practice.
The honors of Simchat Torah should be shared among different members of the congregation. Each member has a role to play, and the virtue of a congregation celebrating the Torah is that many play parts in the proceedings and in the joy of the Torah.