Got my 140 approved! when can I file 485

I'm sooo happy that my 140 was approved. I applied under NIW category. My Indian friend said that she can't file 485 for a long time. I didn't know that. Can someone tell me how long I need to wait to file 485? I'm from Cameroon

to Leslie:

Congrats!
The EB2 visa number is open now so you can go ahead and apply!
You can check your visa number on the visa bulletin
https://travel.state.gov/content/travel/en/legal/visa-law0/visa-bulletin/2019/visa-bulletin-for-january-2019.html

to Leslie:

Yeah you and your spouse should be able to file I-485 whenever you want. Hope you can get your green card soon!