The amount of time you'll have to wait for an offer of housing will normally depend on where you want to live and how many points you have. Points can be confusing. This information should help you understand how the system works.
Some people won't ever get enough points for an offer. If you're in this position you'll need to think about other housing options, like renting privately or making your current home more suitable. Smartmove Housing can help make renting privately more affordable. You won't have to pay a full deposit before you move in and the rent should be affordable to people on housing benefit.