The 2023 Senior Bowl practices are this week and the game is on Saturday. I cannot find when the weigh ins and measurements take place but I assume they are today since practices start tomorrow.
There are a lot of sites out there with more information that has already been put together so no need to redo anything here.
A lot of different sites have some specific players they recommend checking out which is likely for their own team and fans but here is a non team specific site ...