It's the 4th day after botox, my lines are visible and my crowfeet are also there. Will my forehead improve?

Botox usually takes 7-10 days to see full result from your treatment, I suggest you wait another week and schedule a follow-up with your provider, he/she would know how many units were applied and what area 

Don't worry, you need a good 2 weeks to see the full results of your Botox treament. If you're still unhappy once that timeframe has passed, I'd recommend following up with your dermatologist to reevaluate and make sure you're happy with your results.

Botox takes longer than a few days to see the effects. Typically, the majority of the effects are seen at one week, and close to 100% are seen by 2 weeks. However, the immediate effcts of Botox will only prevent you from making a deep crease, or line of movement. The lines which are visible when your face is relaxed will still be there. Over time as you continue not to re-crease these lines with movement, the lines will soften. With repeated treatments, they will fade and usually disappear. Remember, these lines took a lifetime to form and will take longer than a few days to erase. Good luck!

These lines can take some time to appear improved after Botox injections, typically from 1-2 weeks. After that period of time if you do not see improvement you may need additional injections. 

It can take
up to 2 weeks for the full benefits of Botox to show. The lines that you make
when showing expression will be improved with Botox injections, if you have
lines at rest then they will soften with Botox. If you wanted more improvement
to the deeper “at rest” lines then the addition of filler would give you best
results. In my office I have patients come in 2weeks after injections for a
re-evaluation. If a patient has any concerns then I am able to make adjustments
at that time. If you would still like more improvement after 2 weeks it’s best
to see your physician and go over your concerns.