Praise be to Allah, and may peace and blessings be upon the Messenger of Allah. To proceed:
First: Seeing Allah تعالى in Paradise Is Established
It is part of the creed of Ahl al-Sunnah wal-Jama‘ah to believe that the believers will see their Lord, سبحانه, in the Hereafter and in Paradise. This is among the greatest blessings enjoyed by the people of Paradise. Allah تعالى says:
“On that Day, some faces will be radiant, looking at their Lord.” [Al-Qiyamah: 22–23]
It is authentically established in Sahih Muslim that the Prophet ﷺ informed us that Allah تعالى will remove the veil for the people of Paradise, and that they will not be given anything more beloved to them than looking at their Lord, سبحانه.
There are hadiths stating that the people of Paradise will gather on Friday, which is the Day of Increase, and that they will enjoy seeing Allah تعالى on that day. Some scholars have graded some of these reports as good.
It is reported from Ibn Mas‘ud رضي الله عنه in a way indicating that the people of Paradise see their Lord every Friday, and that their closeness to Him corresponds to how promptly they used to hasten to the Friday prayer in this world.
It is also established in Sahih Muslim that the people of Paradise will gather every Friday in the market of Paradise, where they will increase in beauty and handsomeness. Some scholars have mentioned that this increase in their beauty may be due to their seeing their Lord, سبحانه.
The fact that seeing Allah has been established on Friday does not mean that it does not occur on other days. The people of Paradise differ in their ranks and blessings, and among the greatest of their blessings is seeing Allah تعالى.
However, we do not know of any authentic, explicit text that specifies the number of times they will see Allah or establishes that the vision occurs every day, every hour, or at every moment. Therefore, it is not correct to assert such details with certainty.
It has been reported that Shaykh al-Albani رحمه الله stated that the believers see their Lord every Friday. As for seeing Him every hour or every moment, he did not know of any established text concerning that.
The believers’ seeing of their Lord in Paradise is certainly established. The texts also establish that the people of Paradise will see their Lord on Friday, which is the Day of Increase.
As for specifying that the vision occurs only once, or that it occurs every day or every hour, there is no authentic evidence specifying this. Therefore, one should limit oneself to what has been established in the texts.
And Allah تعالى knows best.