for portofolio,about skill can i write all my skill on software?or it just must related skill to job i want?

It depends

Do you master them all ? Or are there you used for a small project but nothing fancy ?

Like, I managed to make a website in vuejs and nuxt. Do I count those as 'skill' ? No. What I managed to do with it is not worth yet to have it as a skill.

@Grumm oh ok,so now about resume,i want to put experience there but i never work in another company.can i write Developing Android app from ..... to .... and give them some link for my project?

@Siko and same with developing game i do alone

@Siko If these are relevant to what you are looking for, sure why not ?

I also have mentioned that I did some summer work for 2 month on a farm. Some ask why adding that ? It is not relevant for an IT job, but it can show that I am not afraid of working with my hands and stuff.

Any experience can be good as long they are relevant. Also make sure that it is big enough.

Like the app, is it a big app ? How much time did you spend making it ? (And by this I mean the actual dev time not like 30 days but only 2-3 hours a day.) Time you spend learning does not count as experience.