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We would like to inform you that the time taken for a work visa is sixty days. As for the rest of the visas, if you mean to travel abroad, then each embassy has a different procedure from the other.
However, if the intended is travel visa to outside the place of residence, the expected period is two weeks to twenty days at the latest.

Dear, with the invitation, it may be easier in terms of visa requirements, you may not need to provide a bank statement that covers the costs of fees throughout the period of stay in addition to the need to do without the presentation of the reservation for the ticket ( hotel) and without the presence of the invitation , you are obliged to submit the following documents:
1- Passport, provided that it is valid for at least six months
2- Clear personal photos, such as a photo on the passport.
3- Submit a bank statement showing the account movement for the last three months to ensure expenses in case of travel.
4- Provide bookings for round-trip flights.
5- Submit hotel reservation (ticket).
6- Submit a health insurance policy.
7- Provide residence, provided it is valid for at least three months, in addition to the sponsor's agreement if you are an expatriate.
*** Then pay the fee determined on the visa, which the embassy estimates at the time. And whether or not the embassy agrees to grant you the visa. This is everything concerning your request, thank you.