What is the ruling on running away from home to avoid the disclosure of having abandoned Shiism, and is Zakat obligatory on money that has remained for four years in a joint account with the mother, and is money saved by the mother to cover Zakat?

Firstly: You may conceal your adherence to Sunnah if you fear consequences, and there is no harm in emulating their prayer [the prayer of those who are not Ahlus-Sunnah] as long as you do not omit a pillar or an obligatory act, such as letting the hands hang loose (sadl al-yadain) and raising them when bowing (rukūʿ), and striking the thighs when performing the salām. Indeed, these are Sunnah acts, not obligatory ones.

Secondly: Leaving your family depends on your financial independence and the harm that may result from it. So, weigh the benefits against the harms. If concealing your worship becomes difficult and you are able to leave them, even for a period, to learn your religion, become independent, and find a righteous environment, then leave them. An adult son may separate from his parents, and your departure is affirmed if it preserves your religion or brings about a preponderant benefit, while still upholding the obligation of honoring and maintaining ties with your parents. And whenever you are able to become independent from your family, return to them to gently invite them to the Sunnah.

Thirdly: Zakāt is obligatory upon you for the past years if your wealth reached the niṣāb (minimum threshold) and a whole year passed over it. If you are unable to pay all of it, it remains a debt upon you.

Fourthly: Tarāwīḥ prayer is highly recommended, so strive to perform it if you can. If you are unable to, there is no blame upon you, and you will be rewarded for your intention, as it is said, "Indeed, there are people in Medina who, no matter how far you travel or how many valleys you cross, were with you." They were prevented by an excuse.