Ajay Devgn is one of the most popular and successful actors in the Indian film industry, also known as Bollywood. He has appeared in numerous hit movies and has won several awards for his performances. Devgn is also a producer and director and has worked on several successful movies in these roles as well. As a result, he is considered one of the highest-paid actors in Bollywood.

However, the exact fee that Ajay Devgn charges for one film is not publicly known. Like most other Bollywood actors, Devgn is known to negotiate his fee on a project-to-project basis, and the amount he charges can vary depending on several factors. These factors include the budget of the film, the script, the director, and the other actors involved.

In general, top Bollywood actors like Ajay Devgn are known to charge fees that are in the range of several crores of Indian rupees (INR). One crore INR is equivalent to ten million INR. Some reports have suggested that Devgn's fee for a single film can be as high as INR 25-30 crores.

However, it is important to note that these figures are not confirmed, and are based on industry rumors and speculation. Actors and their agents typically do not disclose the exact amount they charge for a project, and the figures that are reported in the media are often estimates based on various sources.

In addition to his acting fees, Ajay Devgn is also a successful producer and has worked on several movies as a producer. As a producer, he earns a share of the profits from the films he produces, in addition to his fees as an actor.

In conclusion, while the exact fee that Ajay Devgn charges for one film is not publicly known, it is safe to say that he is one of the highest-paid actors in Bollywood. His fee for a single film can be in the range of several crores of Indian rupees, but the exact amount varies depending on several factors.