This is a little template I designed to mark drilling holes for a drawer pull with a 3.75" post to post dimension.

The idea is to find the center of the drawer, put that center in the center hole, rest a small level on the upper ledge, then mark with a pencil the two outer holes (which are 3.75" apart), then drill the two holes.

Here's an example of a drawer pull that works with this template. https://www.lowes.com/pd/Motiv-3-3-4-in-Center-to-Center-Avante-Bronze-with-Copper-Highlights-Bauhaus-Bar-Cabinet-Pull/50019888

Comment if you want another dimension, or just tweak the .stl file in TinkerCAD.