I can tell your mastery of English is not that great, but you need to be extremely careful with how you say certain things, especially to an immigration officer. So you're not the owner of a store, you're the general manager of a store, which is fine. As long as you don't have any legal ownership or make business profits, you're fine.I’m the owner operator I didn’t purchased anything i just got that store to manage on commission
I take it that your nomination certificate isn't attached to a job or NOC, in which case you have freedom to work in any job in the province. As such, you still need to provide a letter stating that you manage a store and about your duties. You should get this written and signed by the legal owner of the business who appointed you in this position.