Hi
Depending on your country and from where (eg Apple Online Store, Apple Authorised Reseller) you bought your Apple Watch, your purchase may not be eligible for return due to you changing your mind or you may be charged a restocking fee.
For more information, check the seller's policy or ask them directly.
If you purchased from Apple and returns are not normally allowed or restocking fees normally apply in your country, then I'm afraid that no-one here can tell you what Apple will decide.
You are not talking to Apple here - this is a user-based technical support community.