how do i check my portfolio thus far and add things to it?

i might sound super clueless here because i actually am 😭. is there a way to check with ur sch if u can see whats in your portfolio thus far? and also how do u add stuff to your portfolio like what is required and who do u email to. for instance i volunteered at this place for a few months and the only proof i have for volunteering is just going to their website, logging into their volunteer portal and showing how many hours i have. is that sufficient to show proof that i volunteered and how do i input it into my portfolio? im so lost