is that a developable surface? if so unroll should do but you might need a single surface then for a better unroll. since the centre of the sheet metal at least should stay within the dimensions
if its doubly curved it will get more complex. Rhino 9 has some new stuff for squshing that might help here.
if you want more help posting some of your geometry might help. a screen shot causes a lot of guessings and lost time.