1Corinthians 16:2 On every first of the week, each man from you in
his home, let him lay aside and keep that which he is able, lest when I
should come then collections will occur.

This is another passage which F. F. Bruce (and other Sunday Keepers)
cite as a supposed “Sunday Worship” service. However there is
nothing in 1Cor. 16:2 to indicate a Sunday meeting is involved. In fact
the Aramaic text of 1Cor. 16:2 says plainly htybb “in his home”.

Unfortunately the Greek translator rendered this with par eautw “by
himself” or “at home”. Many English translations from the Greek
have omitted this phrase entirely. Surprisingly F. F. Bruce, who cites
this passage as support for Sunday worship, admits in his commentary that this was not taking place in a Sunday assembly at all. He writes about this verse:

Nor were the individual sums to be taken to church
and handed over to the community treasurer: each
member is to put something aside par’ heauto,
‘at home’, and store it up there.
(1 and 2 Corinthians; F. F. Bruce; p. 158)

In one book Bruce cites 1Cor. 16:2 as evidence of a Sunday Church
service, then in his own commentary to the same verse he admits that
this passage takes place in individual homes and that the “sums” (more likely it was food) were never even “taken to church”.

This passage is simply telling us that on the first day of each week, the Corinthians were to start out their work week by setting aside
whatever food they are able to so that no collection would need to be
made at the last minute when Paul arrived.