Thinking about this makes me a bit sad..........15 years of playing/studying and a little while teaching and now 20 years later I can barely remember a thing
Anyway Hath........are you trying to figure out the actual chords Pete plays or the key that each section is in that could be strummed along.........if you know what I mean? Even though the specific chord may not be played the old sheet music used to have the "chord"/key that each section was based on running along the top.
So the site I found was this -put your cursor over the little fretboard at the top and you can change the format to keyboard.
https://www.911tabs.com/link/?8971795Another idea that I remember recommending to a friend at one point is that there are websites that have reverse chord finders. it may not technically be a "chord" but if you're good enough to read the tab and know what the notes are then on this website (as an example) there are various sections where it will look at the usual relationships within a chord (3rds, 5ths etc...) and name the chord and then also show you how to play it on a keyboard.
So for example the opening 3 noter in the song according to that transcription has the notes B,F,A which is like a F inversion with the third and flat 5.
So go here............
https://www.scales-chords.com/chordid.phptype B,F,A into the drop down menus and tick "only use these notes"
Once it gives you a chord (or something like it) you can click on the link to show it on a keyboard
Hope that helps a little - it's quite a useful website.