What's going on for you right now? Transits to your AC, or to anything in your chart, are felt most when they're applying. Just like it feels more like Christmas on December 20th than on December 27th, even though the 27th is closer in time to the day itself.
This transit to your ascendant is coming while the whole world is in a major crisis, which the planetary alignment of Saturn, Pluto, and Jupiter, and now Mars, reflects. Everyone is affected by this crisis, no matter where in their chart the alignment falls. People who have the alignment on a major chart point get especially strong effects in their personal lives. When it's a transit to your ascendant, it's a revolution in your identity and your interactions with the word.
If you're in lockdown or quarantine, that reflects Saturn right there. If you or a loved one has the virus, if you've lost your job (or were job searching and now can't), that's a very personal effect.
This might also mean the crisis is a particular turning point for you. Maybe the way you live, where you live, what kind of work you do, etc., is all changing because of it. There might be new opportunity as well as loss. You might have to revise your sense of who you are and what your place in the world is (that's a very Pluto/AC thing). If you've already been having this experience the last few years, it's likely accelerated now.