i have self de-index domain but it has too much link in above 4k .. i have tried 301 redirect as well but fails .. so now i want to ask you is this possible to self indexed 3 domain all all are same nice different position on google which has quite good link juice redirect on money site ?
If you deindexed your domain on purpose, then yeah you can redirect it. If google hasnt banned it, you are good.
If you have sites ranking, you could 301 them to your money site for better rankings, or you could just build links on them to your money site (PBN style).