I play it picking style by hitting the root note then the G-B-e-B-G strings.
Examples of three chords:
       C                        D                      G
e------------0-----      e---------2-----     e-------------3-------|
B----------1---1---      B-------3---3---     B----------0-----0----|
G--------0--------0      G-----2--------2     G-------0-----------0-|
D-----X------------      D---0-----------     D-----X---------------|
A---3--------------      A-X-------------     A---X-----------------|
E-X----------------      E-X-------------     E-3-------------------|
Intro:  C D F G   C D G G
C           D            F  G
It is the evening of the day,
C             D              F   G
I sit and watch the children play.
F             G          C           Am  F         F                G  G
Smiling faces I can see, but not for me, I sit and watch as tears go by.
C               D        F    G
My riches can't buy everything,
C              D            F   G
I want to hear the children sing.
F          G            C              Am
https://www.coveralia.com/acordes/as-tears-go-by-marianne-faithfull.php
All I hear is the sound of rain falling on the ground,
F         F                 G  G
I sit and watch as tears go by.
Instrumental:  C D F G X2  F G C Am F F G G
C           D            F  G
It is the evening of the day,
C            D               F   G
I sit and watch the children play.
F           G                   C         Am
Doing things I used to do, they think are new,
F         F                 G  G
I sit and watch as tears go by.
C              D              F              G
Hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm
C              D              F              G
Hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm
C              D              F              G
Hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm, hmm...Fade