Very specific and little-used software, I even thought it had disappeared from the face of the earth! Joke aside, little chance of finding a trial version since not offered by the publisher:
https://www.bentley.com/fr/products/product-line/modeling-and-visualization-software/microstation
If it's to train you for having worked on version 95 an eternity ago, it's still close to autocad and similar software. You adapt to it very quickly without having had any specific training.