If you go through the real story of gangubai (who used to have strong connections from underworld, money laundering,kidnapping, contract killing etc were the basic work of gangubai in real life) although she worked for females from brothel but that doesn't justify her other work which includes killings...
This movie is only about the good work done by gangubai...and if we only talk about movie then half of the movie have songs and dialouges of alia bhatt(it will be like akhir ye kehna kya chahti h)..
If you really wanna watch this movie then wait for Netflix or prime, don't waste your money in cinema hall..