Yes. You need an old version of gsc-tool to do that.
You can download it from here: https://cdn.discordapp.com/attachments/1076132145145319547/1196136154865598504/gsc-tool.exe
usage: gsc-tool.exe <mode> <game> <path>
* modes: asm, disasm, comp, decomp
* games: iw5, iw6, iw7, iw8, s1, s2, s4, h1, h2, t6
* paths: file or directory (recursive)
You probably need to do gsc-tool.exe decomp t6 <script name>