For the moment I'm sure there are not many online stores that accept bitcoin, if their country has allowed bitcoin as a means of payment, then I'm sure it will be easy for us to find online stores that accept bitcoin.
now a days there are very few numbers of online shops that accept bitcoin but we can expect more in future that bitcoin will become more and more famous in future and then in the whole world everywhere all stores will be accepted bitcoins but it will take more time because bitcoin still bitcoin is not at that stage.