How do I go about getting an id renewal in these timed

I never have nv I'd what I need for get my nv I'd I from Cuba I live here for 18 year

You should be able to renew your ID online through a MyDMV account. Please do it online. https://dmvnv.com/idrenewal.htm

You can make an appointment, but they are 3-4 months in advance. Your best bet is to get in line at the Sahara office very early about 5-5:30 am so you can get your ID that same day. Or you can go on a Saturday. They do all walk-in on Saturdays.