How do i refill ny worcester junior 24i combi boiler? as i cannot get the pilot light to light

Two types dependent on age
Early - in the mains water inlet pipe there should be a service valve/tap which when turned on will refill [it is close to or part of the fill loop - a metal braided flexible pipe
Later - underneath there is a hole for a plastic tap [supplied with boiler] to be inserted [usually just right of center] Insert and turn 90 degrees then close to it another small knob or 2nd tap which when turned [same action as a basin tap] will refill. If the first tap is not inserted properly water will drip out past its seals
For both Refill to about 1.5 - 2 bar and turn off
For the later as above but also remove the 1st tap