I'm posting my pm to you here as I feel it's important for other new small tank owners to see too. And I've added to it!
What is your Ammonia reading? I don't see that in the list.
A cycle can take up to 6-8 weeks to establish and you see BOTH Ammonia AND NitrItes spike high and come back down. THEN you will get a NitrAte reading and only then will you be thru the cycle. You are looking for about a 20 or .20... can't remember where the decimal is lol. Once you see that, you are ready. You DO need an ammonia source which is what Flint said. That is either a fish that is living/eating/pooping, OR Ammonia OR and ammonia source.
Now having said that, you CAN add a fish earlier, i.e. cycling with a fish IN, but you need to be ready to handle it! "Prime" is a water conditioner that will neutralize Chlorine, Chloramine, Ammonia, NitrItes AND Nitrates. You will need very little so get a tiny bottle as you will only use a drop at a time likely. With the test kit, you can figure out where you are day to day and treat accordingly, lots of water changes if necessary (they dilute high readings) and get thru WITH a live fish in the tank.
What about a Female betta instead? The tank is NOT big enough for more than one, they will fight too but there are lots of females that need homes too.
This tank will also need a heater. Do you have one?