i hate to be that guy sorry but....
i found a good deal on some work vskf the specs are 18x10 -20 all around 1, would these even come close to clear the brembos because from what i understand about offset wheel width i don’t think i would clear i may be wrong because i am new to this topics but i do have a general understanding.
2, for my own understanding would adding a (Xmm) spacer make them fit?
can someone help me before i make a mistake thank you

If anything, theoretically there’d be waaaaay MORE clearance of the spoke rear face than you need. A negative offset of 20mm puts the mounting face 50mm closer to the inner lip and PRESUMABLY the spokes will be concave enough to clear the calipers.

But....

There may still be clearance issues where spokes meet the barrel or on the barrel itself if they are stepped barrels. Only way to be sure is test fit.

Even if they do clear, I’d be more concerned with what such a negative offset will do to your hubs and bearings.