If you want a specific LCA, there are two routes to do it:
1: Identify if the LCA has already been made elsewhere. In this way you can have the results of the analysis from a secondary source.
2: Make the LCA yourself. This requires that you have knowledge about the input and output of the production, and the value chain around the product you are assessing.
I recommend looking at the Hauschild LCA handbook, and at the ISO 14040 and ISO 14044 handbooks, to see how you can conduct LCA's. There is a lot of material for sure, but it is very rewarding once you figure out how it works.
Best of luck.