The instruction leaflet that comes with each tamagotchi is worth reading... it tells you how to take care of your tamagotchi and how to check things like your skill points - and what they are
I suggest you take a few moments to read through them - you will feel a lot more confident about playing with your tama...
Your skills points are listed in the same place your stats are. You have already seen them if you have seen the screen with the smiley (humour), star (beauty), weird thing (love)...
To check how many skills points you need to choose the first icon, then B to scroll through all the stats.
When you've checked your Happy/Hungry hearts, keep pressing Button B and after the Happy/Hungry hearts, you will see Training Points,
then the Skills Points, then age weight name, then Gender and Generation.
The numbers next to the skills points increase when you play the games or feed them certain foods. So make a note of (for example) your smiley (humour) points then play a game like Apple. If you get a good score, the points will increase.