As docu-dramas go, not bad. It is very hard to find 'region 2' DVDs of any US athletic champion's biopic, even to stream.
I barely knew anything about Simone Biles (I've since seen the Gabby Douglas story and was impressed by both films). I was interested to see how a bonafide mega-champion came to be. The story is well told with lots of impressive gymnastics. You have to admire her, her parents and her coach. The practical challenges, discouragements and whole psychological journey are as interesting as the physical development. And I liked how the gradual improvement was so well shown: The final scenes showing Ms Biles' olympic performances surprise, as a spectacular step-up from all that went before; delightful. The journey though all the build up this film offers, earns the viewer a much deeper understanding of what those final amazing feats really took to achieve. I've not been in such awe since Nadia Comaneci (and she had less height and complexity in her moves)