How to apply/not apply filters according to frame number in Hybrid?

[Selur]

a 1000 frame video, frame number 1-1000,

1000 frame clip has frames 0-999

if I want to skip filtering in 101-200, What should I put into the 'Range' field

so you do not want to filter 100-199.
Range works the other way around it specified where to apply the filter, so range should be "[0-99] [200 999]".

And what is 'Offsets' for?

Cycle sets the size of the frame grouping, to cycle 5 would chunk the video into packages of 5 frames.
Offsets then specifies which frames to keep.
So with cycle 5 and:
offsets=0 1 2 3 - the first 4 frames of every 5 frames would be filtered
offsets=2 - the third frame of every 5 frames would be filtered
offests=2 4 - only the third and fifth frame get filtered
see, also: https://www.vapoursynth.com/doc/function...every.html

Cu Selur