What I learn so far regarding escrow is that first I have to get trust of members here by doing some trade and getting +trust. Building reputation that's displayed with profile is important.
Keep in mind that Escrow is not just getting paid some money so that you can hold on to it and receive some fee! @bL4nkcode mentioned a very important criterion: knowledge.
How familiar are you with bitcoin protocol? For example can you create multi-signature scripts of any kind (That includes P2SH, P2WSH, P2SH-P2WSH an in 15 days that Taproot activates P2TR)?