Unix: Bash Limiting Output to X Amount of Lines

I am trying to modify a script so that it will truncate the output that goes to another file to a maximum (for example: 1000 lines).

I have read about split, but what I understand is that split by default does 1000 by default and splits that file into smaller files.

But, there may be a time when the output isn't going to be 1000 lines. It may only be 100.

I just want to cap the output at no more than X amount.