Welcome to the Wefugees Community and sorry for the delayed reply.
Unfortunately, I am not very experienced with similar cases, but I know that there are numerous counselling offices in Germany supporting transgender refugees. On this website, you can search for a respective office close to your current location. Since you have a residence permit which is valid for longer than 6 months, you can apply for asylum in a written form at the BAMF in Nürnberg. But I am sure the counselling office can also support you in this. Regarding your other question, I can't see any reason, why the asylum application should affect your bank account our your tax ID. So don't worry about this.
I wish you all the best and please don't hesitate to get back to us with any further questions.