122 goals were scored in the Group games of the 2018 FIFA World Cup tournament.
I have some priors and posteriors for this and two previous tournaments for when goals might be and were scored in 15-minute time intervals.
I have some posteriors for when goals were scored by half:
My priors, by time interval, for the knockout stage in 2018 are:
A record of the 122 goals scored in the Group stages can be found in this Google Sheet.