For s17Pro , it can goes up to 95'c

After 95'c probably it will hang or crash or restart or it's hash rate will goes down to zero
And for sure the life time of the miner will reduce.

Just don't let it go over 95'c

If it goes over 98'c , it will fry
I had one new s17pro which passed over 105'c (i don't know why) and it's dead now , burnt.