M.P.
I had the same issue with my one daughter when she was around 3 months old. She started to dislike taking a bath out of the blue. It turned out that it was just a phase that only lasted a few weeks and then she eventually got over it. Is there a toy you can give her to keep her occupied while you give her a quick bath?
Also, are you using a baby tub? My other daughter started to dislike her bathtime around 4-5 months and it was obvious that it was the small tub that she didn't like. We started using a bath seat in our tub and she loved it.