Identify what NF you think each table is in.
Employee Table: 3NF
Store Table: 3NF
Customer Table: 3NF
Order Table: 2NF
Product Table: 3NF
Category Table: 3NF
Supplier Table: 3NF
Are there any attributes that should be in a different table in their design?
After analyzing, it does not seem that any attributes are out of place and it seems all attributes fit their respective tables.
Do they have any partial dependencies?
No, there is no composite keys in the ERD.
Do they have any transitive dependencies?
The only transitive dependency I could find was in the Order Table, where Order_Price is dependent on Order_Qty.