To get one stop shopper level 5?

[Suk.]

How can i get it to level 5 like 5 owned game?

[FFL2and3rocks]

Buy more games. Free games don't count.

[Maria]

Easy, there are some free games that still count +1 when you add them to your library (usually, a free game won't be added to the tally).

Some of them are listed here:
https://steamcommunity.com/sharedfiles/filedetails/?id=2762571542