I can't currently tell you a time frame because in the current circumstances times vary a lot. It could be in a matter of weeks (less than 6) or several months. You can always ring and ask. They don't normally phone you, unless they have any questions. You are likely to receive the decision. You do at that point have the right to speak to someone about the decision and have it explained to you.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems