Im not sure you could argue that Ukraine is overall a fascist state. Zelensky isnt secretly one of them and lord knows they werent good at winning elections when they ran either.
However, with a lot of fascists rewarded with government posts after their performance in maidan and an entire fascist batallion somehow having the independence to defy a presidential order to stand down in a war, it's pretty clear that fascists hold a significant level of power in Ukraine.
They have power over themselves and their actions, they have little or no power or real influence in the country. They're certainly not making it in any way fascist. In fact the only reason they have any standing at all is due to the Russian aggression, if the Russian's hadn't invaded Azov would be truly irrelevant.
Nor does it change the fact that when it suits it's own interests, Russia promotes and funds fascists. Clearly none of this has anything to do with fascism, Russia didn't send massive columns of armoured vehicles and thousands of troops at Kyiv over Azov battalion.