Obviously impossible to predict this early. I think the following records in olympic events are safe: Men's 50/400/800 free, men's 100/200 breast, men's 200 back, men's 400 free relay, men's medley relay, women's 50/800/1500 free, women's 100 breast, women's 200 fly, women's 200 IM. The 3 records in olympic events for each gender that are (in my opinion) the most likely to be broken:
Men: 400 IM, 100 free, 200 IM/200 fly/100 back
Women: 200 back, 100 fly, 400 free/100 back/200 breast/400 IM/800 free relay
Number of world records in olympic events that were broken at the last 5 world championships:
2013: 2 (both by Ledecky)
2015: 5 (4 on the women's side (2 of them by Ledecky) + the mixed medley relay)
2017: 5 (4 on the women's side + the mixed medley relay)
2019: 4 (2 on both sides, but the 2 on the women's side were both in relays)
2022: 2 (both on the men's side)
-> From 2013 to 2017 not a single world record on the men's side was broken (but 10 on the women's side), but at the last two editions all 4 individual records that were broken were on the men's side. So if i would have to guess the number of records that will be broken, i would say 3 or 4.
Also interesting:
Oldest world record on the men's side: 400 IM (Phelps in 2008)
Oldest world record on the women's side: 200 free (Pellegrini in 2009)
Records on the men's side that were set before 2010: 50 free, 200 free, 400 free, 800 free, 200 back, 400 IM, 400 free relay, 800 free relay
Records on the women's side that were set before 2010: 200 free, 200 fly