Usually school will advise. In most schools they hv 2 uniforms daily and pre-covid they will shower in school before changing to afternoon uniform. So on weekly basis, best to hv 3 sets of each uniform so that clothes can be washed. Any shoes is ok as the kids go barefooted or with non-slip socks. Hopefully school now allows you to enter for first few days to accompany your child. Else, usually day 1 is half day and depending on child adaptability, will extend length from day 2 onwards.
We bought 3