I cut like two days ago and the laceration will not heal and looks like it's infected. what should i do ?

See a professional: If it looks infected you should see a doctor. Urgent care will be less expensive than an emergency department, primary care will be less expensive than urgent care. Make sure you are keeping the wound clean and covered, antibiotic ointment may help, but you may need oral antibiotics as well.

Skin infections: Unfortunately, for this kind of condition, you should see a provider in person. This is the only way to know for sure if it's infected and also receive the appropriate treatment both for the laceration and for any potential infection. This can be done at a local urgent or primary care clinic.