As others have said, it varies based on a number of factors. I used to ride around 110 psi on both tires on my Madone and it was a stiff ride. After reading on here that hokie runs different front and back tire pressures on his Roam, I did some research on tire pressures and eventually experimented a little with them. I discovered that 95 psi front and 110 psi rear works really well on my Madone with 23c tires. You'll have to try out different combinations and ride them out to get a feel for how the bike accelerates, stops and corners.
https://cyclingtips.com/2017/05/what...re-pressure-2/