Government officials cannot force you to take the Covid-19 vaccine or file an FIR against you for refusing to do so. If someone forces you to take the vaccine, it is a violation of your right to privacy and bodily integrity, and you can file a writ petition against this in the High Court/Supreme Court. Currently, it is not a crime to refuse vaccination. However, the Epidemic Diseases Act, 1897 and the Disaster Management Act, 2005 give the government large powers to take whatever action necessary for preventing the spread of a disease. So, the government can use these powers to make vaccination compulsory in the future.
Please note that while no one can force you to take the vaccine, you still need to follow the Covid-19 norms like the lockdown/curfew rules. If you intentionally do any unlawful or negligent act which is likely to spread the infection of any life-threatening disease, the punishment is jail time of up to six months and/or a fine. Further, if you intentionally disobey a lawful order by the police or a government official, and this causes danger to human life, health or safety, you can be punished with jail time of up to six months and/or a fine of up to Rupees one thousand.