Hello
You will need to go back a bit and rework this neck but there we’re no live stitches which makes taking the neck edge apart “safe”.
The pick up and knit of these 4 different numbers of stitches all happen on one row.
To “pick up an knit” you work a knit stitch into the fabric, so your working yarn will be joined to the first stitch (leave a tail to weave in later) and will be used to work into each new stitch all the way across so that when you turn it is joined like a normal end of row and ready to work back.
The different numbers are to ensure the correct distribution of stitches around the neck.
There must be an error here as it mentions the right side of the neck twice and has omitted the left side. Most necks begin at the left (as you wear it) shoulder and work across the front to the right shoulder and across the back to the opening where the left shoulder will be seamed. If you look at the finishing instruction it has the left shoulder seamed later whih confirms the first part of this neck pick up should be LEFT front neck.
I don’t know your size but begin on the left front and pick up AND knit 12 sts evenly spaced.
Then continue to pick up and knit across the front neck, the right front, the back. All one row.
Turn and work back on the wrong side, knit.
Turn, Bind off knit wise.
I would then test the firmness and stretch of the neck to see if I liked it. You might prefer the bind off in a larger needle for instance to give a bit more stretch and these couple of rows are relatively easy to undo and reknit.
Hope this helps