If you are looking for the subtitle file for specifically timed for the WEBRip.x264-ION10 release, you can find it on several dedicated subtitle hosting sites.
: A popular community-driven site where you can search for the exact release name to find matching timings. subtitle Goodnight.Mommy.2022.WEBRip.x264-ION10
Because this is a WEBRip, the frame rate and start times are generally standardized. If you download a subtitle that is slightly off, most media players (like VLC or MPC-HC) allow you to adjust the sync manually by pressing G or H (in VLC) to shift the text forward or backward. If you are looking for the subtitle file