if u use procreate, here's a tutorial! https://www.youtube.com/watch?v=vQr-9MDL8Sk

make sure that when ur saving the PSD files ur clicking on "Save to Files" and not "Save Image"

then u can find the saved PSD files in the appli "files" on ur iPad :

then click on the desired PSD file and click on the share button, then open procreate here

if ur not on ipad, u can find online tutorials by searching : "How to open a psd file on [NAME OF THE SOFTWARE UR USING]"

I hope it's helpful;;💓