view
def user_view(request, username):
    profile = Profile.objects.get(username=username)
    return render(request, 'signup/user.html', {"profile": profile})
url
 path('user/<str:username>', user_view, name='user'),

html
<a href="{% url 'user' profile.user.username %}"> это ссылка на сам профиль юзера

model

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    image = models.ImageField(default='default.jpeg', upload_to='image')