Small Medical Shop and not necesarrily a Pharmacy chain

Is there any module in ERPNext for a single Medical Shop to list all the medicine details ?

You could probably use Stock Summary or Stock Balance.

If you’re new to ERPNext, I’d suggest you to go ahead with a software that is commonly used by pharmacies. I am fan of ERPNext and not that ERPNext is not capable to handle pharmacy operations. But an industry specialized software will be much easier to operate in the environment. Also, when new employee joins, they might be familiar with similar industry software.

Im targetting medical shop owners who are running the shop single-handedly.

I would advise you to check out GNU Health for your requirement.

It may solve your problem.