If it's just the black plastic, previous owner bent one and I had to replace it. Got one at a junkyard.
The bottom push pieces that hold it on... I had to ruin most to get them out; ordered new ones.
There are like.. 5? of them on the bottom. On the car I removed it from (don't remember the year, S60) it had push pins up front, but on my V70 they had 3 rivets up front.
Then the whole thing slides forward. The clips that it 'slides' on and push into the top of the floor... Between the 2 cars, of the 10 clips, I broke 6.. Should prob order some of those too.
V Part: 30784514 https://www.volvopartswebstore.com/products/Volvo/2004/V70/Plastic-rivet/1176729/9133417.html
Maybe one of those will show you the part? I didn't care enough to poke too much around. Found the C30s, they wanted ~300 for it; they call it a 'protecting plate, left
'. Don't know how it's held on.
Hope that helps a tiny bit?
I can get two used side scuffs. Problem is, they are both from right side. In XC70 mk3 they are visibly narrower in the front and broader at the back. In mk2 it seems they should be interchangeable. Only "XC" letters should be put to rear wheels. Do you know if I can really put right one to the left side (will it fit, not looking bad?) Thx for comments!!