Hey Meesh, sorry for the late reply, just noticed this discussion board.

If you want to play this map for Escape Simulator, you will need to first buy Escape Simulator on Steam.
https://psteamproxy.yuanyoumao.com/app/1435790/Escape_Simulator/

Then you can return to this level's page and click on the "Subscribe" button. https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2861390478

Then when you launch Escape Simulator, this level will appear in-game automatically.

Here's a video on downloading steam workshop content in general (example shown is for CS:GO)
https://www.youtube.com/watch?v=9hHHVLnazlI

Hope this helps

thats awesome thank you so much! i cant wait to play!!!