It is impossible to say. Lengthy waiting times, accommodation in centres and living in a foreign country are not easy. In extreme cases, the proceedings can take years. Nevertheless, it is important for you to be registered. You can register later at any time.
It is difficult to spend the day in a worthwhile manner if you have nothing to do and are not allowed to earn money. Nevertheless, try to make something out of your time. Our tip: Try to learn German as quickly as possible. This will also help you in your search for work. If you like being with other people, help out on a voluntary basis! Ask at the Red Cross or other aid organisations whether you can help out. Ask at your place of residence about clubs where you can participate. You will meet new people and find new opportunities.