Q.Spots on my hosta plants
I planted my hostas about 3 weeks ago. I purchased them from a local nursery. They all had a healthy appearance until the last few days. They have developed light colored spots along with some dark spots. Can you tell me how to treat it please?

I believe you host is infected with a virus.
I have listed a link that gives more information.
Since this can spread easily to other plants I would personally remove them from my garden.
I would contact the nursery it was purchased from and request a replacement. Most reputable garden centers will stand behind their product.
https://www.gardeningknowhow.com/ornamental/foliage/hosta/hosta-problems.htm
https://extension.psu.edu/pests/plant-diseases/all-fact-sheets/hosta-diseases