They stopped distributing 35mm film to regular movie theaters in 2014. Only a few modern releases are printed in 70mm IMAX, and only a few IMAX theaters can still project it.
It’s practically useless for viewers. I had a friend who was a projectionist in a theater: they went digital and used both 1080 uncompressed or 4K uncompressed. He pointed me to the different formats when they were projected and we couldn’t tell from the seats. Not imax, just a regular theater with 300 something seats.