Editing metadata using Terminal

How can I edit the metadata of an MP3 file based on the name?

I already have a script that renames the file correctly (see below). In the process, it uses variables for the elements. I would like to then use those variable to insert the data into the metadata.

#! /bin/zsh -
set -o extendedglob
pattern='(#b)*_ \((<0-999>)\)(* )—( * )(<1-12>)_(<1-31>)_(<1900-2100>)(.mp3)'
ret=0
for file {
  if [[ $file = $~pattern ]] {
    argv=( "$match[@]" )
    mv -i -- $file "${(l[3][0])1} -$2-$3- $6-${(l[2][0])5}-${(l[2][0])4}-0900$7" || ret=$?
  }
}
exit $ret

Using this script, this file:

Public Talks_ (9) Walking With God Brings Blessings Now and Forever — Chris Ruscher 10_28_2023.mp3

is renamed to:

009 - Walking With God Brings Blessings Now and Forever - Chris Ruscher - 2023-28-10-0900.mp3

The format is: track# - title - artist - date.mp3

Showing the variables: $1 - $2 - $3 - $6-$5-$4-0900$7

So I would like to then insert those values into the metadata seen below.

a. track ($1) >> kMDItemAudioTrackNumber

b. title ($2) >> kMDItemTitle     

c. artist ($3) >> kMDItemAuthors

d. timestamp ($6${(l[2][0])5}${(l[2][0])4}0900) >> kMDItemContentCreationDate

The script would also modify the file creation date to kMDItemContentCreationDate. I tried adding the touch -t command to the loop but it didn't work for this last step (see 2 new lines with > below)

#! /bin/zsh -
set -o extendedglob
pattern='(#b)*_ \((<0-999>)\)(* )—( * )(<1-12>)_(<1-31>)_(<1900-2100>)(.mp3)'
ret=0
for file {
  if [[ $file = $~pattern ]] {
    argv=( "$match[@]" )
>   fecha=( "$6${(l[2][0])5}${(l[2][0])4}0900$7" )
>   touch -t $(date -j -f "%Y%m%d%H%M" $fecha +%Y%m%d%H%M) $file
    mv -i -- $file "${(l[3][0])1} -$2-$3- $6-${(l[2][0])5}-${(l[2][0])4}-0900$7" || ret=$?
  }
}
exit $ret

Any ideas? I am new to scripting so I have cobbled together what I have found on the forum. Your insight is much appreciated.