Selection does not create any new genetic information, it destroys it. You do not create information by killing the individuals carrying it. Rearranging the chairs on the Titanic will not make it stay afloat either.
Take a million random numbers of 20 digits.
Kill all the numbers that don't contain at least 6 sixes.
The remaining numbers clearly contain more information; anyone looking at the numbers will notice that there are a lot of sixes; they will probably conclude all numbers with fewer than 6 sixes have been eliminated
There was no information in the initial set
There is information in the second set.
We have therefore created information purely by eliminating things.
Mutation creates variation within a poulation. Then selection comes along and weeds out the variations that can't survive. The ones left all (or disproportionately) have the beneficial mutation that, before selection, existed only in a small number of individuals.