I don't normally ask for help, but every profile says to wait for the Boss to arrive (except one that says to talk to a biker, but that goes nowhere). It's day 82
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I can't know what it is without seeing your save file but there must be something missing because The Boss arrives at day 68 after sleeping in MC's room.
Basically, the lab needs to be unlocked and you have to be quite far in Stacy's quests. If that doesn't work, feel free to send your save file and I'll check it out.
Here's where they are located:
PC: C:\Users*YourWindowsUserName\AppData\Roaming\RenPy\Lewd Town Adventures
Android: SD:/Android/data/com.{gamename}*.program/files/saves Alternatively, you can use the file manager to find the correct save map where the Renpy save files belong.
Through Discord you'll be helped within minutes.