For people who are new to the Marvel Universe... Wanda Maximoff (Scarlett Witch) and Vision are a couple who are in love with each other. The aftermath of Infinity War and Endgame left Wanda with nothing so she created this alternate reality. It may be hard for you to follow in the beginning so I highly advise you to watch ALL of the Marvel movies in Chronological Order before watching this show. :)
Please DO NOT look at the 1 star reviews for answers. A lot of them will say they have only watched the first episode or the first two episodes. Some of them haven't watched it all the way through as well.
Being a Marvel Fan ever since Iron Man came out in 2008, I can say that I highly recommend watching this show after you watch all the movies. Just because the show is confusing in the first episode doesn't mean it doesn't get better.
Please watch the first couple episode all the way through to know what is actually happening.