As a rogue, you can
- Move (7.5m/9m)
- Action used to take the Dash action (7.5m/9m)
- Bonus action used to take the Dash action as a bonus action (Rogue feature called Cunning action) (7.5m/9m)
- Reaction
And take each of those in the order you want.
The way you use to describe the 5e rules set is totally made up and not in the actual D&D 5e player’s handbook.