Try the following,
Put the negative in the enlarger and focus the image on your easel, using the full width of whatever size paper you're using. I'm assuming it's likely 10x8 or 12x8 (in.).
Set your enlarger for grade two, either with built-in filters, or Ilford filters.
Get a piece of cardboard or other opaque paper that is more or less the size of your enlarging paper or larger. The envelope the paper comes in will work well if you have nothing else.
Set your timer for 3 seconds.
Set the lens at f/11
Make sure the enlarger's red filter is not in place.
Turn off your white lights and switch on your safelight
Put a sheet of paper in the easel. Most papers curve gently towards the emulsion side. If it's a glossy or pearl/luster surface paper the emulsion side will be shiny and reflective even under the safelight.
Expose the entire sheet for 3 seconds.
Cover about 25 mm of the long dimension and expose again for 3 seconds
Repeat until you run out of room.
Process the paper for at least 1 minute in fresh paper developer.
You should have an image ranging from very light to very dark with one or two sections that look more or less ok. Now you can count by 3 to that section, and make another print at that exposure time.
If you don't have an image, then something else is wrong, the paper is still upside down, or you are using the wrong developer, or there is some other chemical or material problem.

If the entire test sheet is too dark then stop the lens down (bigger number) one stop and repeat.
If the entire sheet is too light, try f/8 on the lens.
Before you turn on the white (room) lights make sure the paper is back in it's plastic bag and in the envelope or box.

Let us know what happens.