Hkw much time does it take to write and speak good english?

Mate, it all depends on one's learning capability i.e. grasping power. Some take less time and some take more time. Take your time to learn anything. Taking time and learning properly is better than rushing and understanding nothing!

Also, don't be disheartened if your peers are learning things quickly than you!...You may take time to learn but you might turn-out to be better than the rest later...Good Luck!...Happy learning!...☺👍

I speak good New Englandish well.

Sometimes it takes English speakers their whole life.

Idk. Depends on the person and the conditions in which you learn English. Moving English-speaking country can make the job way easier.

no idea but if you like learning English then in a shorter time should be expected

If you can speak two languages enough to be understood your doing better then most!