It usually takes gum tissue about 3-4 weeks to heal entirely, after 1 week your Dentist should already see the gum tissue starting to close. However, pain should be lessening by the second day. But it varies from person to person, and also depends on how easy or difficult the tooth removal was.
Here is some great information on post-extraction care:
When you return home, do the following to help ensure a smooth recovery:
To reduce swelling, apply an ice pack to the area. Apply for 10 minutes at a time.
Do not dislodge the blood clot that forms in the wound. Do not spit or rinse forcefully in the first 24 hours.
Do not smoke.
Do not allow food particles to pack into the socket.
Do not use drinking straws in the first 24 hours.
Begin rinsing your mouth 24 hours after the procedure. Use a solution made of ½ teaspoon salt and 8 ounces warm water.
Eat a soft or liquid diet for the first 24 hours.
Avoid activity for the first 24 hours. For the next 1-2 days, limit your activity.
Continue to brush and floss other teeth. This will help prevent infection in the extraction site.
Be sure to follow your doctor's instructions.
In the first 24 hours, expect some swelling and bleeding. The initial healing period usually takes about 1-2 weeks. New bone and gum tissue will grow into the gap.
Having a missing tooth can lead to shifting teeth, improper bite, or difficulty chewing. Your dentist may attempt to restore the area with an implant, fixed bridge, or denture.
For more information, please visit: https://www.empowher.com/media/reference/tooth-extraction
All the best,