ordered some dots from b00mtown, tracking says it should have been delivered today but nothing. I'm not TOO worried that LE got involved, I'm sure it'll show up Monday, but what will go on with tracking if they do get involved? Would it actually say seized? as of now it just says in transit.
If it's a small amount and they don't plan on doing a CD then the tracking will actually say "SEIZED BY LAW ENFORCEMENT." If you search this sub you'll find numerous threads proving this.
If it's a larger amount and they are planning on doing a CD, then the tracking information will appear normal, as though nothing is out of the ordinary.
As others have already said, if tracking says delivered but you didn't receive it then LE has most likely not seized your pack. It is theoretically possible (maybe they want to see which IP address checks the tracking online or if somebody calls to inquire about the package in order to provide more evidence for a court case) but highly unlikely, especially since you ordered acid which is obviously very easy to stealth.
I'd say one of the following probably happened (listed in order from the most likely to least likely possibility):
Pack got accidentally scanned even though it hasn't been delivered yet. In this case you'll most likely receive it on the next mail day (Monday).
Mailman accidentally delivered to wrong address.
Somebody stole your mail.
Vendor selectively scammed you by sending an empty pack to a different address in your area so that they could win dispute (very unlikely given the good reputation b00mtown has).