I have lvl 0 on honor !!

I have been recently banned for 14 days for inting with my friends, and I got my honor level to 0. After I got unbanned and played for about 2 days, it said that I unlocked rewards again, even though when I went to my profile it still said that I am level 0. Can someone explain how you level back up from level 0 to 1, from 1 to 2, and if it is easier than leveling up to level 3. Thank you in advance.