If I apply for asylum how long it can take to get...

If you applied for asylum before the Canadian authorities, the application will not be decided directly, but it may take a long time with many interviews and the asylum application may face rejection or acceptance. Here is the following explanation:
Acceptance of an asylum application if it is submitted depends mainly on the fear of the person or family of death and death in the event of staying in the country, so regarding the application, it is either through a review of the Office of the United Nations Commission in the place of residence but this method is not recommended at all, because it takes a long time and often faces rejection, so many follow the second method, which is obtaining a visa and then traveling. Once you arrive in the plane, the asylum application is presented at the airport, provided that you are detained by the airport authorities and to investigate with you after placing you in a refugee camp, up to a decision, and after setting an appointment for interviews to ask about the request and its goals, if approval has taken place, you can be granted temporary residence until this permanent residence is first.
***There are also other ways to seek refuge in Canada through church sponsorship, which is the presence of a person present in Canada who guarantees you through the church and after submitting a monetary amount in cash for expenses for their asylum. Tn other words, this type of church sponsorship requires that the asylum seeker be outside Canada and in order to a person to take refuge in Canada through the church, he/she should have a person to sponsor him/her in Canada. This is all waht relates to your inquiry dear.

The help lies in sending the invitation that enables you to obtain the visa and in the event of arrival your sister cannot help, but the matter depends on submitting the application for asylum from you upon arrival and the decision remains to the immigration authorities in the consideration of the application

No rights are granted as long as the asylum application has been submitted and has not been decided
All rights without exception shall not be granted to a refugee except after the decision to consent to asylum
Regarding to the financial situation, your sister can guarantee you in this regard until the decision to request asylum is decided