You can find your achievements for the year on any workout session page or from your profile page.
When you're viewing your result for a workout session, any movements involved show their respective Achievements and your progress with them. If you tap on any of them, this will direct you to your overall Achievements page that lists all possible achievements and your progress with each.
To get to your Profile Page, you can tap on your profile picture on the Home Page if you have one set.
If you don't have a picture set (you're using the default avatar), simply tap the CrossFit btwb logo and then choose "View Profile".
Here you'll see your personal Profile Page. Continue on by tapping "Achievements" from the list. Then you can choose the year you're interested in, and you'll be directed to your overall Achievements page for that year.