The chances of getting a visitor visa from Acrra is very very very low, but not impossible. You sound like you may have a valid reason to apply. You'll need to demonstrate the urgency of your situation and proof that your reason for coming to visit is genuine and that you'll be returning to Nigeria. See this thread for guidance on what to expect and the documents you may need to submit https://www.canadavisa.com/canada-immigration-discussion-board/threads/visitor-visa-granted-while-waiting-for-pr.520770/Wow that's a long way. But I will like to ask if its a good idea to apply for visiting visa to go there and wait because my dsughter is having her surgery in few weeks from now and I really wanna be there to support my wife. So Can I still apply for visiting visa while my processing is still ongoing??