Here is one way. When rows are selected in the row template, I store them on the main form. Then, when I want to view the selected rows, my main form passes the selections to a new form. For simplicity, I let a data grid handle the pagination.
There are many ways to do this but hopefully this can help to get you started.
clone:
https://anvil.works/build#clone:7YVTONL5XI5TX6YW=F3DTCMA52HFILGCO7MSIAMGV