There are a number of printable multiplication tables available online, but it does not appear to be possible to find one that is so big that it goes up to 100 x 100. It would certainly be difficult to fit that many numbers into a single poster. A 30 x 30 printable poster is available at www.vaughns-1-pagers.com/computer/multiplication-tables/mult
If you cannot find a suitable multiplication table on the internet then you can create a table yourself by using a spreadsheet program such as Microsoft Excel. A guide to creating a multiplication table using Excel is available at office.microsoft.com/en-us/excel-help/create-a-multiplicatio
There are a wide variety of multiplication tables available if you do a simple image search using a search engine. However it does appear that the most detailed of these tables only goes up to 30 x 30.

Alternatively, it may well be possible to find a multiplication poster table by visiting a stationery store, craft shop or a supermarket. Searching for a 'multiplication poster' online will also give you a list of websites that sell multiplication tables in poster form.

If you want to multiply numbers above 30 x 30, you might need to rely on either a calculator or on doing the multiplication sum by hand using a pen and paper.

Alternatively, it may well be possible to find a multiplication poster table by visiting a stationery store, craft shop or a supermarket. Searching for a 'multiplication poster' online will also give you a list of websites that sell multiplication tables in poster form.

If you want to multiply numbers above 30 x 30, you might need to rely on either a calculator or on doing the multiplication sum by hand using a pen and paper.