My foot has been numb for a month is it neropathy?

Difficult to say: This needs to be evaluated medically, although neuropathy is a possible diagnosis, numbness of just one foot may have multiple potential causes including low back issues.

Could be...: Symptoms of nerve damage can range from a numbness and tingling sensation, possibly a burning sensation, to an uncomfortable painful sensation of the extremities. For some, these symptoms are mild, while for others, they can be severe and disabling. Neuropathy can develop as a result of a pinched nerve, trauma, drug side effect, and some diseases such as diabetes. See your physician.

Possibly: Blanch, you are 33 years old, which makes some things more likely and some less. There are many types of neuropathies, some from compression/pressure which seems likely here. Less likely are "peripheral neuropathies" which involve all nerves to varying degrees. Usually with one foot numb the cause is compression from ill-fitting socks or shoes. Talk with your doctor, or consider a neurologist.