well you should give a proper insight about the project, before demanding for tBTC!
Actually, it should be as easy as just requesting some tBTC4 for free.
Even worse than that: you'll be testing things in your real Bitcoin wallet. You could of course create a new wallet, but I like to keep testing and real Bitcoin strictly separated.
Eh, theoretically, we could use testnet4 for the same purpose, without "touching" the main net at all. It just becomes too complicated for little reason.
Some people, apparently, try to recreate or move Ordinals on testnet4:
https://bitcointalk.org/index.php?topic=5515748.0.