Like Windows have AMD suite to monitor and tweak. Do we have any app in repository? I have RX 550, i think I tried Radeon or some similar name app but my GPU doesn’t gets listed in the application.

There's no AMD “suite” app for Linux. Including if you used the official proprietary AMD GPU drivers, there's simply no official ones.
If you expected some overclocking utility, I could suggest you radeon-profile available in the Solus repositories or CoreCtrl (Will have to compile it).
There's no fancy laggy AMD Radeon overlay software with fancy settings, sadly.

    Harvey This one seems better and have decent options to work with. Thanks

    Bhibb Same personally, especially since it's in the Solus repository (I did try to check it at the time of replying, but strangely could not find it, surely a typo) Would recommend as a top suggestion now (But I can't edit my comment since it as liked by other people, forum issue)
    I haven't heard of upp, but it seems decent as well.

    8 months later